Optics/Photonics in Ukraine, Prof. Igor Dmitruk, Prof. Eugene Odarenko

https://twitter.com/mrsorokaa/status/1575417836352290816?s=20

I get the sense this clip of Ukrainian soldiers may be clueing us into optics/photonics (see above tweet) . . .

https://twitter.com/mickeykats/status/1538288718452346880?s=20

I do not have access to the article tweeted above by Prof. Mikhail Kats; and thus, I am left on my own to begin digging into things like opto-electronics and nanophotonics in Ukraine. Something tells me the photonics field is bustling in that country . . . Let’s see how far I get – especially given that much of the material coming out of Ukraine is not translated into English, and many sites do not permit access (repeatedly, I come up against “access denied”) . . .


At first glance, I came up with very little . . . Therefore, I had to go back to 2012 to gain some context:

12th Kharkiv Young Scientists Conference on Radiophysics, Electronics, Photonics and Biophysics

By Ievgen Pichkalov

08 August, 2012

A.Ya. Usikov Institute of Radiophysics and Electronics of the National Academy of Sciences of Ukraine (IRE NASU)
Ukraine, Kharkiv, 4-7 December 2012
Conference website: YSC-2012

YSC 2012 is the 12th Kharkiv Young Scientists Conference on Radiophysics, Electronics, Photonics and Biophysics.

Following the success of previous conferences, A.Ya. Usikov Institute of Radiophysics and Electronics of National Academy of Science of Ukraine (IRE NASU) and Young Scientists Council of IRE NASU are pleased to announce the 12th Kharkiv Young Scietntists Conference. YSC 2012 will be held in Kharkiv, Ukraine on December 4 – 7 and hosted by IRE NASU.

We invite graduate and post-graduate students and young scientists (under 35 y.o.) who work in any of the mentioned here fields to take part with 15-minute oral or poster presentation in our conference. We also invite leading scientists in Radiophysics, Electronics, Photonics and Biophysics to present 30-minute oral review talks at the plenary session of the Conference.

A.Ya. Usikov Institute of Radiophysics and Electronics of the National Academy of Sciences of Ukraine (IRE NASU)
Ukraine, Kharkiv, 4-7 December 2012
Conference website: YSC-2012

YSC 2012 is the 12th Kharkiv Young Scientists Conference on Radiophysics, Electronics, Photonics and Biophysics.

Following the success of previous conferences, A.Ya. Usikov Institute of Radiophysics and Electronics of National Academy of Science of Ukraine (IRE NASU) and Young Scientists Council of IRE NASU are pleased to announce the 12th Kharkiv Young Scietntists Conference. YSC 2012 will be held in Kharkiv, Ukraine on December 4 – 7 and hosted by IRE NASU.

We invite graduate and post-graduate students and young scientists (under 35 y.o.) who work in any of the mentioned here fields to take part with 15-minute oral or poster presentation in our conference. We also invite leading scientists in Radiophysics, Electronics, Photonics and Biophysics to present 30-minute oral review talks at the plenary session of the Conference.

Conference Topics:
1. Optics and Photonics
– physics of advanced and novel lasers (solid, gas, chemical etc.);
– active media for lasers;
– laser resonators;
– optical waveguides and optical beam propagation;
– nonlinear and high-speed optics;
– quantum optics (quantum states,information and chaos);
– organic coherent optics;
– application of lasers in modern technologies (optical communication, range finders, laser weapon etc.);
– laser spectroscopy;
– interaction of laser beam with microobjects;
– holography;
– lasers in medicine (therapy,diagnostics and surgery);
– optical measurement and instrumentation.

2. Computational and experimental electromagnetics – antennas (reflectors, lens, printed, etc.)
– antenna arrays
– resonators (open, closed, passive, active)
– waveguides (metallic, dielectric, planar, etc.)
– gratings and frequency-selective surfaces
– decelerating systems
– quasioptical systems
– passive devices (filters, splitters, phase shifters, etc.)
– methods of analysis (analytical and numerical)
– methods of optimization
– measurements

3. Biophysics
– molecular biophysics
– applied biophysics
– cell biophysics
– molecular modelling
– cryobiophysics
– nanobiophysics

4. Microwave and terahertz electronics
– fast wave devices
– slow wave devices
– microwave/RF plasma interaction
– vacuum and semiconductor microelectronics
– microwave systems
– X-ray and Terahertz radiation sources
– charged particle beams and sources

5. Geoscience and remote sensing
– radiowave propagation
– satellite navigation
– synthetic aperture radars (SAR)
– processing of radar signals and images
– passive radars
– scattering models

6. Radio Astronomy and Astrophysics
– radio emission from the Sun and stars
– galactic and extragalactic radio astronomy
– spectral lines, pulsars and relict radiation
– interplanetary medium. Planetary radio emission
– radio telescopes, interferometers and radio astronomy equipment

7. Nano- and metamaterials
– photonic/electromagnetic crystals
– negative index materials
– planar metamaterial structures, meta-surfaces
– chiral structures
– granular, layered nanostructures and nanotubes
– superconductor materials
– liquid crystals
– nonlinear materials
– experimental studies and characterization of metamaterials
– analytical and numerical modelling of metamaterials
– application of metamaterials in microwave, THz and optical ranges

8. Solid-state radiophysics
– solid-state plasma
– electromagnetic wave propagation and interaction
– acoustic waves
– surface waves
– nonlinear electromagnetic properties of solid-state structures
– quantum phenomena
– electron transport

Important Dates
30 Sep 2012 – Deadline for on-line registration and paper submission
31 Oct 2012 – Paper acceptance notification
4-7 Dec 2012 – Conference dates

Conference Topics:
1. Optics and Photonics
– physics of advanced and novel lasers (solid, gas, chemical etc.);
– active media for lasers;
– laser resonators;
– optical waveguides and optical beam propagation;
– nonlinear and high-speed optics;
– quantum optics (quantum states,information and chaos);
– organic coherent optics;
– application of lasers in modern technologies (optical communication, range finders, laser weapon etc.);
– laser spectroscopy;
– interaction of laser beam with microobjects;
– holography;
– lasers in medicine (therapy,diagnostics and surgery);
– optical measurement and instrumentation.

2. Computational and experimental electromagnetics – antennas (reflectors, lens, printed, etc.)
– antenna arrays
– resonators (open, closed, passive, active)
– waveguides (metallic, dielectric, planar, etc.)
– gratings and frequency-selective surfaces
– decelerating systems
– quasioptical systems
– passive devices (filters, splitters, phase shifters, etc.)
– methods of analysis (analytical and numerical)
– methods of optimization
– measurements

3. Biophysics
– molecular biophysics
– applied biophysics
– cell biophysics
– molecular modelling
– cryobiophysics
– nanobiophysics

4. Microwave and terahertz electronics
– fast wave devices
– slow wave devices
– microwave/RF plasma interaction
– vacuum and semiconductor microelectronics
– microwave systems
– X-ray and Terahertz radiation sources
– charged particle beams and sources

5. Geoscience and remote sensing
– radiowave propagation
– satellite navigation
– synthetic aperture radars (SAR)
– processing of radar signals and images
– passive radars
– scattering models

6. Radio Astronomy and Astrophysics
– radio emission from the Sun and stars
– galactic and extragalactic radio astronomy
– spectral lines, pulsars and relict radiation
– interplanetary medium. Planetary radio emission
– radio telescopes, interferometers and radio astronomy equipment

7. Nano- and metamaterials
– photonic/electromagnetic crystals
– negative index materials
– planar metamaterial structures, meta-surfaces
– chiral structures
– granular, layered nanostructures and nanotubes
– superconductor materials
– liquid crystals
– nonlinear materials
– experimental studies and characterization of metamaterials
– analytical and numerical modelling of metamaterials
– application of metamaterials in microwave, THz and optical ranges

8. Solid-state radiophysics
– solid-state plasma
– electromagnetic wave propagation and interaction
– acoustic waves
– surface waves
– nonlinear electromagnetic properties of solid-state structures
– quantum phenomena
– electron transport


http://exp.phys.univ.kiev.ua/en/About/index.html

Experimental Physics Department
Taras Shevchenko National University of Kyiv

Faculty of Physics

Head of the Experimental Physics Department - Prof. Igor Dmitruk, Doctor of Sciences (Physics and Mathematics).

General information about the department

Founded in 1834, it is one of the university’s oldest departments. The department is headed by Prof. Igor Dmitruk, Doctor of Sciences (Physics and Mathematics).

Many famous scientists worked at the department at different times, including professors M. P. Avenarius, Y. Y. Kosonohov, H. H. De Metz, V. Ye. Lashkariov, O. M. Faidysh, corresponding members of the Academy of Sciences I. I. Kondіlenko and M. U. Biliy as well as academician I. S. Horban’ who founded scientific school ‘The Optics of Novel Functional Materials and the Opto-Electronic Systems of Surface Quality Control.”

The department employs 12 lecturers and 14 support staff members. In 1983 the department opened research laboratory ‘Electronic and Optical Processes’, which employs 7 research scientists and 4 engineers and technicians. The department’s lecturers give lectures to the students of the Faculty of Physics in such sections of general physics as mechanics, molecular physics and thermodynamics, electricity and magnetism, optics and atomic physics as well as conduct seminars and laboratory classes.

The department’s employees deliver lectures in physics to students of the Faculties of Mechanics & Mathematics, Geology and Cybernetics. They also give lectures and seminars to 8th to 10th grade pupils of Kyiv University’s Physics and Mathematics Lyceum. Since 1990 the department has focused on training of specialists in photonics, admitting about 10 students for a two-year (bachelor’s degree) or four-year (master’s degree) periods. The department organically combines the training of students with research into such topical fields as collective effects in the electron-hole systems of semiconductor crystals, interaction of light with gyrotropic structures, electronic and phononic processes in semiconductor materials (including nanostructures), structures and phase transitions in liquid crystals as well as the photonics of organic media, particularly, of macromolecules of synthetic and biological origin.

In the framework of the state-funded research project ‘Study of Functional Organic and Inorganic Materials for Photonics and Nano-Electronics’ the department employees investigate localized and inherent electronic conditions in wide-gap crystals and molecular systems; electronic, excitonic and phononic excitations in semiconductor crystals and nanostructures; interaction of laser radiation with biological objects; interaction of light with heterogeneous and chiral structures in condensed state. The department continues to carry out spectroscopic studies of the organic metal systems that contain metallic nanoclusters on heterocyclic molecular structures.

The research laboratory is equipped with computerized high-resolution spectrometers, various lasers, picosecond devices, cryogenic set-ups for operating at extremely low temperatures (>1.6 K), photon counting systems.

The department maintains close scientific contacts with institutes of the National Academy of Sciences of Ukraine, such as the Institute of Physics, the Institute of Molecular Biology and Genetics, other faculties of the university, e.g., the Faculty of Chemistry, as well as universities and research institutions in other countries (Institute of Lasers, Photonics and Biophotonics, the University of New York, New York, USA; Gdańsk and Kraków Universities, Poland; Charles Sadron Institute in Strasbourg, France; Tohoku University in Sendai, Japan, etc.).

Department employees participate in Ukrainian and international scientific conferences on a regular basis and publish the results of their research in leading domestic and foreign professional journals. They also conduct advanced studies in leading foreign laboratories.

Research

The directions of scientific activity at the Department of Experimental Physics:

  1. Photonics of organic media. Sensorics. Information recording. Non-destructive testing of materials (leader – Prof. V.M.Yashchuk)
  2. Photonics of non-organic media. Applied photonics. Lasers and devices for photonics and biophonics. Information recording. Non-destructive testing of materials (leader – )
  3. Spectroscopy of crystals. Photophysics of fullerenes and nanotubes. Testing of physical properties of nanostructures. Non-destructive testing of materials. Computer simulation of nanoobjects (leader – Prof. V.O.Gubanov)
  4. Collective electronic processes. Nanoparticles. Applied photonics. Lasers and devices for photonics and biophonics (leader – Prof. І.М.Dmytruk)
  5. Spectroscopy of partly ordered media. Conformational peculiarities of liquid crystals and display technologies. Information recording. Non-destructive testing of materials (leader – Prof. V.Ye.Pogorelov)
  6. X-ray-excited luminescence of condensed media. Dosimetry of ionizing radiation. The systems of non-destructive testing of high quality dielectric materials (leader – Prof. V.Ya.Degoda)

Scientific directions of experimental physics department

Scientific leader Prof.
Valeriy Yashchuk
Prof. Prof.
Viktor Gubanov
Prof.
Igor Dmytruk
Prof.
Valeriy Pogorelov
Prof.
Volodymyr Degoda

Fundamental investigations Photonics of organic media Photonics of non-organic media Spectroscopy of crystals. Photophysics of fullerens and nanotubes Collective electron processes. nanoparticles Spectroscopy of partly ordered media X-ray-induced luminescence of condenced media

Applied investigations Sensors. Detecting and visualization of biological objects. Nanoelectronics, nanophotonics and biophotonics. Functional polymers. Information recording. Non-destructive testing of materials Applied photonics. Lasers and devices for photonics and biophotonics. Information recording. Non-destructive testing of materials Checking of physical properties of nanostructures. Non-destructive testing of materials. Computer simulation Applied photonics. Lasers and devices for photonics and biophotonics Conformational peculiarities of liquid crystals and display technologies. Information recording. Non-destructive testing of materials Dosimetry of ionization radiation. Systems of non-destructive testing of high-quality dielectric materials

Fields of application Nanophysics, biophotonics, electronics of semiconductors, medicine


KHARKIV NATIONAL UNIVERSITY OF RADIO ELECTRONICS

EDUCATIONAL AND RESEARCH LABORATORY “ELECTRONICS-ORION”

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Scientific and educational research laboratory (NUIL) “Elektronika-Orion” was created with the aim of combining the efforts of the teaching staff, researchers, doctoral students, graduate students, masters and students of the Department of Physical Education and Science of the Kharkiv National University of Radio Electronics of the Ministry of Education and Science of Ukraine and scientists of the** Scientific and Research Institute “ORION”** (Kiev) for applied research aimed at creating new promising devices and devices in the microwave and optical range, including their mathematical modeling and design, as well as experimental prototyping of electronic products.


Research directions

  • computer modeling of physical processes in electronic devices in the microwave and terahertz ranges, the interaction of optical radiation with photonic crystal structures and metamaterials, including graphene-like ones;
  • the use of microwave energy in technological processes;
  • development of physical and technical foundations for creating a sulfur laser;
  • development of nonreciprocal photonic devices that form the basis for insulators, including topological ones;
  • development of specialized software for calculating and visualizing the characteristics of terahertz and optical devices;
  • application of microwave technologies in medicine and technology.

Science and educational process

All scientific directions of the laboratory are associated with educational programs that are taught at the Department of Physical and Electronic Engineering. First of all, this concerns the master’s educational programs: “Laser and Optoelectronic Engineering” and “Photonics and Optoinformatics”. The subject of master’s qualification works is related to the main scientific directions of the laboratory. The results of the work of undergraduates and bachelors are reported at the annual Forum “Radioelectronics and Youth in the XXI Century”, which is held in KNURE, as well as at various scientific and technical conferences in Ukraine and abroad.


Publishing activity

Several chapters have been published in international monographs:

  1. A.A. Shmat’ko, V. N. Mizernik, E.N. Odarenko, V.T. Lysytsya, Dispersion Properties of TM and TE Modes of Gyrotropic Magnetophotonic Crystals // Chapter from the book «Theoretical Foundations and Application of Photonic Crystals». InTech., 2018. P. 47-69.
  2. Churyumov Gennadiy and Tetyana Frolova, “Chapter 5. Microwave Energy and Light Energy Transformation: Methods, Schemes and Designs,” in Emerging Microwave Technologies in Industrial, Agricultural, Medical and Food Processing / Gennadiy Churyumov, Tetyana Frolova // Book edited by: Kok Yeow You, Ed. Rijeka: InTech, 2018, pp. 75-91.
  3. A.A. Shmat’ko , V.N. Mizernik , E.N. Odarenko, A.S. Krivets , O.V. Yushchenko, Floquet-Bloch Theory for Semiconductor Bragg Structure // Microstructure and Properties of Micro- and Nanoscale Materials, Films, and Coatings. – 2020. – Springer. – P. 51-59.
  4. A.A. Shmat’ko, V.N. Mizernik, E.N. Odarenko Scattering of ElectromagneticWave By Bragg Reflector with Gyrotropic Layers. Advances in Information and Communication Technology and Systems. – 2021. – Springer. – pp. 404-416.
  5. T. Frolova, V. Buts, G. Churyumov, E. Odarenko, V. Gerasimov Microwave Heating of Low-Temperature Plasma and Its Application. Microwave Heating – Electromagnetic Fields Causing Thermal and Non-Thermal Effects. Book edited by G. Churyumov. InTech., 2021. P. 110-134.

A number of articles have been published in journals included in the Scopus scientometric base. In particular, in the journals Quantum Electronics, Telecommunications and Radio Engineering, Progress in Electromagnetics Research, Journal of Electromagnetic Waves and Applications, IEEE Transactions on Electron Devices, IEEE Transactions on Plasma Science.

The scientific topics of the laboratory are also reflected in many theses of reports at international conferences of the IEEE Union:), AMPERE (Spaine).


Scientific seminars

On the basis of the laboratory, scientific seminars are held, the topics of which touch on topical problems of modern science and technology and refer to the main scientific directions of the laboratory. In particular, thematic seminars on the topic of modeling modified photonic-crystal and Breg waveguides (graduate student Sashkova Ya.V.), development of diffraction antennas (Prof. O. Vertiy), randomization of microwave radiation and its use for plasma heating (Prof. V. Buts), modeling the latest devices in the terahertz range (Doctor of Physical and Mathematical Sciences O. Kuleshov), development of gradient mirrors for terahertz lasers (prof. Ye. Odarenko), modern problems of a computational experiment and its implementation in microwave photonics (assoc. prof. T. Frolova).

Responsible for laboratory operation

Eugene Odarenko

Professor of the Department of Photonics and Laser engineering, Member of Specialized Scientific Council, Member of STC, Doctor physico-mathematical science, Senior Researcher

EOL.nure.ua



Leading staff

https://www.researchgate.net/profile/Eugene-Odarenko

Skills and Expertise

Metamaterials

Photonic Crystals

Waveguides

Electronic Engineering

Telecommunications Engineering

Electrical Engineering

Photonics

Optics and Photonics

Optoelectronics

Waves

Abstract:

Modified two dimensional photonic crystal waveguide with different values of vacuum holes radius in two rows on the hollow channel edges is considered. Dispersion properties of surface even and odd modes in photonic crystal waveguide are studied. Spatial distribution of the longitudinal component of electric field changes for different configurations of the modified photonic crystal waveguide. Increase of the vacuum cylinder normalized radius in two rows on the waveguide channel edges results in increase and decrease of the electromagnetic field intensity of the even and odd surface modes in the central part of hollow channel respectively. Therefore, application of the modified waveguides in electron devices can be perspective for efficiency enhancement of beam-wave interaction.

EUGENE ODARENKO

Professor of the Department of Photonics and Laser engineering, Member of Specialized Scientific Council, Member of STC, Doctor physico-mathematical science, Senior Researcher

Education and Career

In 1985 he graduated from the Kharkov State University named after A.M. Gorky specialty “Radiophysics and Electronics”.

1985-1988 – an engineer of Special Design and Technology Bureau of IRE of Ukraine Academy of Science.

Ph.D. – 1994. Thesis was defended at the Kharkov State University named after A.M. Gorky.

1995 – senior researcher at Kharkov State University named after A.M. Gorky.

2004 – Assistant professor of Department of Physical Bases of Electronic Engineering, Kharkov National University of Radio Electronics. Doctor of Sciences – 2013. Thesis was defended at Kharkov National University of Radio Electronics 2015 – Professor of the Department of Photonics and Laser Engineering, Kharkov National University of Radio Electronics

Educational activity

Teaches courses: Technical Electrodynamics, Electron and Quantum Microwave Devices, Optics, Biophotonics, Modeling and Calculation of Devices of Laser and Optoelectronic Engineering, Computer Photonics.

Research activities

Since 1994 he was involved in nine research projects within the framework of the state budget R&D.

Research interests: microwave, terahertz and subterahertz electronics, simulation of photonic crystal structures and devices, electrodynamics of artificial media with metamaterials and surface waves of microwave and optical bands.

Publications and patents

Has over 130 scientific publications, including author’s certificate of USSR.

Dispersion Properties of TM and TE Modes of Gyrotropic Magnetophotonic Crystals

By Alexander A. Shmat’ko, Viktoria N. Mizernik, Eugene N. Odarenko and Viktor T. Lysytsya

This chapter discusses the propagation of TM and TE waves in the one-dimensional gyrotropic magnetophotonic crystals with ferrite and plasma-like layers. Elements of the transfer matrix are calculated in closed analytical form on the base of electrodynamic problem rigorous solution for arbitrary location of the gyrotropic elements on the structure period. Dispersion equation of the layered periodic structure with gyrotropic elements is obtained. Dispersion properties of the structure for TE and TM modes are analyzed for different configurations of magnetophotonic crystals (ferrite and plasma-like layers). Existence areas of transmission bands for surface and bulk waves are obtained. The effect of problem parameters on the dispersion properties of magnetophotonic crystals for TM and TE modes is investigated. Regimes of complete transmission of wave through limited magnetophotonic crystal are analyzed for bulk and surface waves.

Part of the book: Theoretical Foundations and Application of Photonic Crystals

FYI ~ I condensed the following paper (removed the figures and the mathematical equations which did not copy/paste properly), and so as to fit this material into one post (it had exceeded the 50,000 word limit) . . .

Dispersion Properties of TM and TE Modes of Gyrotropic Magnetophotonic Crystals
WRITTEN BY

Alexander A. Shmat’ko, Viktoria N. Mizernik, Eugene N. Odarenko and Viktor T. Lysytsya
Submitted: May 25th, 2017 Reviewed: September 26th, 2017 Published: December 20th, 2017
DOI: 10.5772/intechopen.71273
Theoretical Foundations and Application of Photonic Crystals
IntechOpen
Theoretical Foundations and Application of Photonic Crystals
Edited by Alexander V. Vakhrushev
FROM THE EDITED VOLUME
Theoretical Foundations and Application of Photonic Crystals
Edited by Alexander Vakhrushev

Abstract:
This chapter discusses the propagation of TM and TE waves in the one-dimensional gyrotropic magnetophotonic crystals with ferrite and plasma-like layers. Elements of the transfer matrix are calculated in closed analytical form on the base of electrodynamic problem rigorous solution for arbitrary location of the gyrotropic elements on the structure period. Dispersion equation of the layered periodic structure with gyrotropic elements is obtained. Dispersion properties of the structure for TE and TM modes are analyzed for different configurations of magnetophotonic crystals (ferrite and plasma-like layers). Existence areas of transmission bands for surface and bulk waves are obtained. The effect of problem parameters on the dispersion properties of magnetophotonic crystals for TM and TE modes is investigated. Regimes of complete transmission of wave through limited magnetophotonic crystal are analyzed for bulk and surface waves.

Keywords

magnetophotonic crystal gyrotropic media dispersion diagrams TE and TM modes bulk and surface waves

1. Introduction

Photonic crystals (PCs) are artificial periodic structures with spatially modulated refractive index in one or more coordinates [1, 2]. Their outstanding optical properties are due to the existence of frequency band gaps where the propagation of electromagnetic waves is impossible. Application of these structures became very attractive for modern optoelectronics which uses the various waveguides, resonators, sensors, and other devices on the basis of PC [3, 4]. Moreover, the control of the PC structure characteristics is the important problem that is usually solved using external electric or magnetic fields. These methods of providing controllability are based on the variation of refractive index of special materials such as liquid crystals and magnetic materials [5, 6]. Since these sensitive materials are anisotropic, then theoretical analysis of their properties is more complicated.

When at least one of the PCs’ unit cell components is a magnetically sensitive (gyrotropic) material, they exhibit unique magneto-optical properties and identified as magnetophotonic crystals (MPCs). Investigations of the MPCs are begun for simplest one-dimensional structures [7, 8]. However, one-dimensional MPCs are the basis elements for various active field-controlling applications so far [9, 10]. Changing of the permeability by external magnetic field is one of the main phenomena that allow developing electronically tuned devices in different frequency bands: filters, circulators and so on [11, 12, 13].

Along with the properties inherent in conventional PCs, these structures have additional optical and magneto-optical properties which considerably expand their functionality. Kerr effect, Faraday rotation and optical nonlinearity can be enhanced in MPC due to light localization within magnetic multilayer. Magneto-optical system with large Faraday or Kerr rotation can be used for effective optical isolators [14, 15], spatial light-phase modulators [16] and magnetic field and current sensor [17] development. Furthermore, one can obtain stronger enhancement of the magneto-optical phenomena due to resonant effects in the MPCs [18], which characterized by specific polarization properties. Using PCs with magneto-optical layers provides possibility of control of optical bistability threshold in structure based on graphene layer [19]. It should be noted that not only magnetic materials are suitable for MPC. Namely, one-dimensional PC with plasma layers can be tunable by external magnetic field [20].

A number of applications of the MPCs are inspired by their nonreciprocal properties. For example, special spatial structure of the MPC layers provides the asymmetry of dispersion characteristics and, as a result, the effect of unidirectional wave propagation [21]. This phenomenon allows enhancing field amplitude in the MPC without any periodicity defects. In this case, the so-called frozen mode regime occurs instead the defect mode one.

One of the unique properties of gyrotropic materials is the possibility of negative values of material parameters under the certain conditions. Usually, these are so-called single-negative media that are divided into epsilon-negative media (plasma) and mu-negative ones (gyrotropic magnetic materials). The term “double-negative media” or “left-handed materials” is used for media with negative values of both permittivity and permeability and often replaced by term “metamaterials.” Application of metamaterials in one-dimensional PC systems results in unusual regularities of bulk and surface wave propagation and is the subject of experimental and theoretical research [22, 23].

Theoretical description of the various types of one-dimensional PCs is usually based on the transfer-matrix method of Abelès [24] that was applied by Yeh et al. to periodic layered media [25]. This method cannot be applied in general case for anisotropic multilayer structures because of mode coupling. However, this is possible in special cases, namely, in two-dimensional model of wave propagation in periodic layered media [26]. This case is considered in this chapter. Such an approach makes it possible to simplify significantly the analysis of physical phenomena in complex layered media with various combinations of gyrotropic and isotropic elements. Moreover using well-known permutation duality principle of Maxwell’s equations results in a reduction of unique combinations number. In turn, this allows better understanding of regularities of bulk and surface wave propagation in one-dimensional MPC and finding new modes for applications in modern microwave, terahertz and optical devices.

We study electromagnetic wave propagation in periodic structure in general case with bigyrotropic layers (one-dimensional MPC) (Figure 1). Each of two layers on the structure period L = a + b is an anisotropic medium (plasma or ferrite or their combinations). Their permittivity and permeability are characterized by tensor values of standard form [26]:

  1. Conclusions

The electrodynamic problem is solved for the proper TE and TM waves of a MPC with two gyrotropic layers. The elements of the transmission matrix, the dispersion equation, and its solution are obtained analytically. An analysis of the dispersion properties of TE and TM waves for MPC is carried out, and features of the existence of fast and slow waves are revealed. Different regimes of gyrotropic surface waves are found. The conditions for the existence of surface waves are established for positive and negative values of the permittivity and permeability. Analytic expressions for the reflection and transmission coefficients for a limited MPC are obtained, and their analysis is performed for the regime of bulk and surface waves. Complete transmission of the wave through this structure is realized at resonant frequencies that correspond to different spatial distributions of the mode field in limited MPC.

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Sakoda K. Optical Properties of Photonic Crystals. 2nd ed. Berlin Heidelberg: Springer-Verlag; 2005. 258 p. DOI: 10.1007/b138376
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Lourtioz J-M, Benisty H, Berger V, Gerard J-M, Maystre D, Tchelnokov A. Photonic Crystals. Towards Nanoscale Photonic Devices. 2nd ed. Berlin Heidelberg: Springer-Verlag; 2008. 514 p. DOI: 10.1007/978-3-540-78347-3
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Massaro A, editor. Photonic Crystals - Innovative Systems, Lasers and Waveguides. Rijeka, Croatia: InTech; 2012. 358 p. DOI: 10.5772/2632
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Busch K, John S. Liquid-crystal photonic-band-gap materials: The tunable electromagnetic vacuum. Physical Review Letters. 1999;83(5):967-970. DOI: 10.1103/PhysRevLett.83.967
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Inoue M, Levy M, Baryshev AV, editors. Magnetophotonics from Theory to Applications. Berlin Heidelberg: Springer-Verlag; 2013. 228 p. DOI: 10.1007/978-3-642-35509-7
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Inoue M, Isamoto K, Yamamoto T, Fujii T. Magneto-optical faraday effect of discontinuous magnetic media with a one-dimensional array structure. Journal of Applied Physics. 1996;79(3):1611-1624. DOI: 10.1063/1.361005
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Inoue M, Arai K, Fujii T, Abe M. One-dimensional magnetophotonic crystals. Journal of Applied Physics. 1999;85(8):5768-5770. DOI: 10.1063/1.370120
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Lyubchanskii IL, Dadoenkova NN, Lyubchanskii MI, Shapovalov EA, Rashing T. Magnetic photonic crystals. Journal of Physics D: Applied Physics. 2003;36(18):R277-R287. DOI: 10.1088/0022-3727/36/18/R01
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Inoue M, Fujikawa R, Baryshev A, Khanikaev A, Lim PB, Uchida H, et al. Magnetophotonic crystals. Journal of Physics D: Applied Physics. 2006;39(8):R151-R161. DOI: 10.1088/0022-3727/39/8/R01
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Chernovtsev SV, Belozorov DP, Tarapov SI. Magnetically controllable 1D magnetophotonic crystal in millimetre wavelength band. Journal of Physics D: Applied Physics. 2007;40(2):295-299. DOI: 10.1088/0022-3727/40/2/001
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Shramkova OV. Transmission properties of ferrite-semiconductor periodic structure. Progress In Electromagnetics Research M. 2009;7:71-85. DOI: 10.2528/PIERM09041305
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Abdi-Ghaleh R, Namdar A. Circular polarization bandpass filters based on one-dimensional magnetophotonic crystals. Journal of Modern Optics. 2013;60(19):1619-1626. DOI: 10.1080/09500340.2013.850540
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https://twitter.com/spietweets/status/1504895811276128258?s=42

https://twitter.com/sci_for_ukraine/status/1522044681697247234?s=42

https://scienceforukraine.netlify.app/d/U1460

PA4U (multiple institutions)

A collection of job offers for Ukrainian scholars in the area of optics and photonics.

Research Focus / Keywords

optics, photonics

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I wonder how much of the tens of billions being sent to Ukraine is being funneled into these programs?

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Useful cover - just like post WWII Japan for humanoid robot development.

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RE: “Lights” by Ellie Goulding (featured in the dance clip of the Ukrainian soldiers) – intensely photonics-forward

In the image below (a screenshot I took from the video above), I see the imprinting of hearts, ears (acoustics), and even pretzels/knots — see the full video above for much better (and prominent) pretzel/knot imagery (refer to my other thread on PRETZELS: Little Demon -- Episode 7 "Satan's Lot" ~ Soulbound Tokens? - #16 by AMcD):

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Creepy lyrics.

Lyrics

I had a way then, losing it all on my own
I had a heart then, but the queen has been overthrown
And I’m not sleeping now, the dark is too hard to beat
And I’m not keeping up the strength I need to push me

You show the lights that stop me turn to stone
You shine it when I’m alone
And so I tell myself that I’ll be strong
And dreaming when they’re gone
'Cause they’re calling, calling, calling me home
Calling, calling, calling home
You show the lights that stop me turn to stone
You shine it when I’m alone

Noises, I play within my head
Touch my own skin and hope that I’m still breathing
And I think back to when my brother and my sister slept
In an unlocked place, the only time I feel safe

You show the lights that stop me turn to stone
You shine it when I’m alone
And so I tell myself that I’ll be strong
And dreaming when they’re gone
'Cause they’re calling, calling, calling me home
Calling, calling, calling home
You show the lights that stop me turn to stone
You shine it when I’m alone

Light, lights, lights, lights
Light, lights, lights, lights
Light, lights, lights, lights
Light, lights

You show the lights that stop me turn to stone
You shine it when I’m alone
And so I tell myself that I’ll be strong
And dreaming when they’re gone
'Cause they’re calling, calling, calling me home
Calling, calling, calling home
You show the lights that stop me turn to stone
You shine it when I’m alone

Home (lights, lights)
Home (light, lights, lights, lights, lights, lights)
Home (lights, lights)
Home (light, lights, lights, lights, lights, lights)
Home (light, lights)
Home, home (light, lights, lights, lights, lights, lights)
Home (light, lights)
Home (light, lights, lights, lights, lights, lights)

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Hmmmm . . . Curious pretzel-speak – AKA knot topography (This was during the first week of the Russia/Ukraine narrative):

Ukraine’s ambassador says Russia’s ‘words have less value than a hole in the New York pretzel’ at a UN meeting

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Goulding claimed the song was about her being afraid of the dark when she was young.

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Turned to stone…calling me home. Um…