Yutaka Kadoya

Last Updated :2021/03/01

Affiliations, Positions
Graduate School of Advanced Science and Engineering, Professor
E-mail
kdhiroshima-u.ac.jp

Basic Information

Major Professional Backgrounds

  • 2004/04/01, 2020/03/31, "Professor、 Graduate School of Advanced Sciences of Matter、 Hiroshima University", ADSM, Prof.
  • 1994/04/01, 1998/03/31, "Reseach Associate、 Faculty of Engineering、 Hiroshima University", Eng., Res. Ass.
  • 1998/04/01, 2001/03/31, "Associate Professor、 Faculty of Engineering、 Hiroshima University", Eng., Ass. Prof.
  • 2001/04/01, 2004/03/31, "Associate Professor、 Graduate School of Advanced Sciences of Matter、 Hiroshima University", ADSM, Ass. Prof.

Academic Degrees

  • Doctor of Engineering, The University of Tokyo
  • Master of Engineering, Kyoto University

Research Fields

  • Interdisciplinary science and engineering;Nano / Micro science;Nano / Microsystems
  • Interdisciplinary science and engineering;Applied physics;Optical engineering, Photon science
  • Interdisciplinary science and engineering;Applied physics;General applied physics
  • Engineering;Electrical and electronic engineering;Electron device / Electronic equipment

Research Keywords

  • Optics in nano structures and related devices
  • THz electromagnetic wave
  • quantum optics
  • Semiconductor
  • Molecular Beam Epitaxy

Affiliated Academic Societies

Educational Activity

Course in Charge

  1. 2020, Undergraduate Education, 3Term, Optoelectronic Semiconductor Devices
  2. 2020, Graduate Education (Master's Program) , First Semester, Seminar on Applied Quantum Sciences
  3. 2020, Graduate Education (Master's Program) , Second Semester, Seminar on Applied Quantum Sciences
  4. 2020, Graduate Education (Master's Program) , First Semester, Seminar on Electronics A
  5. 2020, Graduate Education (Master's Program) , Second Semester, Seminar on Electronics B
  6. 2020, Graduate Education (Master's Program) , Academic Year, Academic Presentation in Electronics
  7. 2020, Graduate Education (Master's Program) , 1Term, Exercises in Electronics A
  8. 2020, Graduate Education (Master's Program) , 2Term, Exercises in Electronics A
  9. 2020, Graduate Education (Master's Program) , 3Term, Exercises in Electronics B
  10. 2020, Graduate Education (Master's Program) , 4Term, Exercises in Electronics B
  11. 2020, Graduate Education (Master's Program) , 2Term, Optics and photonics
  12. 2020, Graduate Education (Master's Program) , Academic Year, Advanced Study in Quantum Matter
  13. 2020, Graduate Education (Doctoral Program) , Academic Year, Advanced Study in Quantum Matter

Research Activities

Academic Papers

  1. Bound states in the continuum and exceptional points in dielectric waveguide equipped with a metal grating, New Journal of Physics, 22(7), 073029-1-073029-14, 2020,07
  2. Evaluation of surface roughness of metal films using plasmonic Fano resonance in attenuated total reflection, Physical Review B, 101(8), 085414-1-085414-11, 2020, 02
  3. Detection of Initial Stage of Aluminum Corrosion in NaCl Solution Utilizing Surface Plasmon Resonance, IEEE SENSORS JOURNAL, 20(16), 9091-9096, 2020,08
  4. Light Enhancement under the Opening of Metal Gratings on Semiconductor Substrate, The Review of Laser Engineering, 47(7), 375-379, 2019, 07
  5. Polarization-based branch selection of bound states in the continuum in dielectric waveguide modes anti-crossed by a metal grating, NEW JOURNAL OF PHYSICS, 21(11), 2019, 11
  6. Measurement and Analysis of Noise Spectra in Terahertz Wave Detection Utilizing Low-temperature-grown GaAs Photoconductive Antenna, Journal of Infrared, Millimeter, and Terahertz waves, 40(11-12), 1150-1159, 2019, 12
  7. Estimation of the Number of Quantum Dots Immobilized on an Ultra-flat Au Surface, NANOSCALE RESEARCH LETTERS, 12, APR 26 2017
  8. Light-induced electron localization in a quantum Hall system, Nature Physics, 13(7), 688-692, 2017, 07
  9. Substrate effects on the optical properties of metal gratings, JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, 34(12), 2578-2585, DEC 1 2017
  10. Effect of thermal annealing on the crystallization of low-temperature-grown In0.42Ga0.58As on InP substrate, JAPANESE JOURNAL OF APPLIED PHYSICS, 55(11), NOV 2016
  11. Multipole surface plasmons in metallic nanohole arrays, PHYSICAL REVIEW B, 91(23), 235406-1-235406-10, JUN 5 2015
  12. Breaking Bullseye's Symmetry for Axial Field Focusing, JOURNAL OF INFRARED MILLIMETER AND TERAHERTZ WAVES, 36(5), 455-460
  13. Crystalstructureoflow-temperature-grownIn0.45Ga0.55As on anInPsubstrate, Journal of Crystal Growth, 425, 99-101
  14. Radiation pattern of plasmonic nano-antennas in a homogeneous medium, OPTICS EXPRESS, 22(11), 13263-13268
  15. Terahertz full horn-antenna characterization, APPLIED PHYSICS LETTERS, 102(14), 141115-1-141115-3, 20130401
  16. Characterization of Terahertz Absorption in Clathrate Compound by Compact Spectroscopic Chip, JAPANESE JOURNAL OF APPLIED PHYSICS, 52(2), 028003-1-028003-2, 20130201
  17. THz wave propagation in two-dimensional metallic photonic crystal with mechanically tunable photonic-bands, OPTICS EXPRESS, 20(16), 17271-17280, 20120701
  18. Design of Two-Dimensional Low-Dielectric Photonic Crystal and Its Terahertz Waveguide Application, JAPANESE JOURNAL OF APPLIED PHYSICS, 51(6), 062201-1-062201-5, 20120601
  19. Mechanical active control of surface plasmon properties, OPTICS EXPRESS, 20(9), 9523-9534, 20120401
  20. Extraordinary carrier multiplication gated by a picosecond electric field pulse, NATURE COMMUNICATIONS, 2, 594-1-594-6, 20111201
  21. THz Pulse Propagation on Microstrip Discontinuities, JOURNAL OF INFRARED MILLIMETER AND TERAHERTZ WAVES, 32(5), 666-672, 20110501
  22. Real-time terahertz near-field microscope, OPTICS EXPRESS, 19(9), 8277-8284, 20110401
  23. Weak measurement of photon polarization by back-action-induced path interference, NEW JOURNAL OF PHYSICS, 13(3), 033041-1-033041-11, 20110301
  24. Dynamical Franz-Keldysh effect in GaAs/AlGaAs multiple quantum wells induced by single-cycle terahertz pulses, APPLIED PHYSICS LETTERS, 97(21), 211902-1-211902-3, 20101101
  25. Improved sensitivity of terahertz detection by GaAs photoconductive antennas excited at 1560 nm, APPLIED PHYSICS LETTERS, 97(20), 201110-1-201110-3, 20101101
  26. Directional control of light by a nano-optical Yagi-Uda antenna, NATURE PHOTONICS, 4(5), 312-315, 20100501
  27. Reconstruction of spatial qutrit states based on realistic measurement operators, PHYSICAL REVIEW A, 80(6), 062102-1-062102-7, 20091201
  28. High-Sensitivity Detection of ATP Using Bioluminescence at an Optical Fiber End, ELECTRONICS AND COMMUNICATIONS IN JAPAN, 92(9), 53-59, 20090901
  29. Measurement and control of spatial qubits generated by passing photons through double slits, PHYSICAL REVIEW A, 78(1), 012307-1-012307-9, 20080701
  30. THz wave propagation on strip lines: Devices, properties, and applications, RADIOENGINEERING, 17(2), 48-55, 20080601
  31. Propagation of terahertz pulses on coplanar strip-lines on low permittivity substrates and a spectroscopy application, APPLIED PHYSICS EXPRESS, 1(1), 012009-1-012009-3, 20080101
  32. High Sensitivity Detection of ATP using Bioluminescence at an Optical Fiber End, Trans. IEEE of Japan, 10(127), 1498-1503, 20071001
  33. Terahertz conductivity of localized photoinduced carriers in a Mott insulator YTiO3 at low excitation density, contrasted with the metallic nature in a band semiconductor Si, JOURNAL OF PHYSICS-CONDENSED MATTER, 19(40), 406224-1-406224-12, 20071001
  34. Design parameters for a nano-optical Yagi-Uda antenna, NEW JOURNAL OF PHYSICS, 9(7), 217-1-217-12, 20070701
  35. Terahertz wave emission and detection using photoconductive antennas made on low-temperature-grown InGaAs with 1.56 mu m pulse excitation, APPLIED PHYSICS LETTERS, 91(1), 011102-1-011102-3, 20070701
  36. Detection of terahertz waves using low-temperature-grown InGaAs with 1.56 mu m pulse excitation, APPLIED PHYSICS LETTERS, 90(10), 101119-1-101119-3, 20070501
  37. Terahertz time-domain spectroscopy of photoinduced carriers in YTiO3, JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 310(2), 913-915, 20070301
  38. Possible polaron effect in complex terahertz conductivity of electron-doped nanoporous crystal 12CaO center dot 7Al(2)O(3), JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 75(8), 084715-1-084715-6, 20060801
  39. THz spectroscopic characterization of biomolecule/water systems by compact sensor chips, APPLIED PHYSICS LETTERS, 89(4), 041114-1-041114-3, 20060701
  40. Micro-strip-line-based sensing chips for characterization of polar liquids in terahertz regime, APPLIED PHYSICS LETTERS, 88(21), 212511-1-212511-3, 20060501
  41. Propagation characteristics of terahertz electrical signals on micro-strip lines made of optically transparent conductors, JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 44(32), L1011-L1014, 20050801
  42. Terahertz wave detection performance of photoconductive antennas: Role of antenna structure and gate pulse intensity, JOURNAL OF APPLIED PHYSICS, 97(10), 103103-1-103103-6, 20050501
  43. Observation of Jonscher law in ac hopping conduction of the electron-doped nanoporous crystal 12CaO center dot 7Al(2)O(3) in a THz frequency range, PHYSICAL REVIEW B, 70(19), 193104-1-193104-4, 20041101
  44. Evaluation of carrier dynamics in n-AlxGa1-xAs films by terahertz time-domain spectroscopy with characteristic-matrix analysis, JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 43(10), 7320-7321, 20041001
  45. Generation of extremely weak sub-Poissonian light using high-efficiency light-emitting diodes, JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 43(8B), L1114-L1117, 20040801
  46. Low-frequency spectral enhancement of THz electromagnetic waves emitted from InAs surface with increased excitation intensity, JOURNAL OF APPLIED PHYSICS, 95(4), 2141-2145, 20040201
  47. Broadband photon-number squeezing in light-emitting diodes at low photon-flux levels, APPLIED PHYSICS LETTERS, 83(6), 1113-1115, 20030801
  48. Analysis of mutual communication between qubits by capacitive coupling, PHYSICAL REVIEW A, 67(5), 050301-1-050301-4, 20030501
  49. Effect of static electric field on the beat structures in four-wave mixing signals from semiconductor microcavities, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 71(10), 2384-2387, 20021001
  50. Wideband sub-Poissonian light generation in light-emitting diodes incorporating a heavily-doped active region, APPLIED PHYSICS LETTERS, 81(18), 3317-3319, 20021001
  51. Theory of photon-number squeezing in a heterojunction LED by the nonlinear backward pump process, PHYSICAL REVIEW B, 65(16), 165326-1-165326-15, 20020401
  52. Photon-number squeezing by the nonlinear backward pump process in a constant-voltage heterojunction LED, PHYSICAL REVIEW B, 65(16), 165325-1-165325-9, 20020401
  53. THz electromagnetic wave radiation from bulk semiconductor microcavities excited by short laser pulses, JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 41(3A), L256-L259, 20020301
  54. Generation of heralded twin-photons in a series-coupled mesoscopic light-emitting diode system, JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 40(2A), L85-L88, 20010201
  55. Photon-number squeezing in a light-emitting diode driven by a constant-voltage source: Pump regulation by the non-coulombic effect, JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 39(11B), L1167-L1170, 20001101
  56. Squeezing of photon-number fluctuations in the frequency range wider than 300 MHz in light-emitting diodes at room temperature, JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, 17(7), 1257-1262, 20000701
  57. Beating structure on the spectrally resolved four-wave mixing: Polarization dependence, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 69(7), 2349-2353, 20000701
  58. Beat structure in spectrally resolved four-wave mixing under crosslinear polarization in GaAs quantum wells, PHYSICA E, 7(3-4), 572-575, 20000501
  59. THz electromagnetic wave radiation from semiconductor microcavities in nonperturbative regime, Physica B, 272(1-4), 467-471, 19991201
  60. Influence of the backward-pump process on photon-number squeezing in a constant-current-driven heterojunction LED : Transition from thermionic emission to diffusion limits, Physical Review B, 60(24), 16686-16700, 19990701
  61. THz electromagnetic wave radiation from coherent oscillation of exciton population in high-Q semiconductor microcavities, Applied Physics Letters, 74(25), 3839-3841, 19990601
  62. Controlled spontaneous emissions from current-driven semiconductor microcavity triodes, Applied Physics Letters, 74(9), 1278-1280, 19990301
  63. Wideband deep penetration of photon-number fluctuations into the quantum regime in series-coupled light-emitting diodes, Optics Letters, 24(1), 40-42, 19990101
  64. Ultra clean etching of GaAs by HCl gas and in-situ overgrowth of (Al)GaAs by molecular beam epitaxy, Journal of Applied Physics, 83(1), 567-576, 19980101
  65. Wide-band suppression of photon-number fluctuations in a high-speed light-emitting diode driven by a constant-current source, Applied Physics Letters, 72(3), 284-286, 19980101
  66. Nonlinear optical responses of exciton-microcavity coupled system in weak and intermediate coupling regime, Journal of Luminescence, 72-74, 297-299, 19970601
  67. Electron-and photon-manipulation in microcavities and practical applications, Superlattices and Microstructures, 22(1), 97-107, 19970301
  68. Effect of oxygen incorporation at AlGaAs/GaAs interfaces on the electrical properties of two-dimensional electron gas, Applied Physics Letters, 70(5), 595-597, 19970201
  69. Influence of Photon Reabsorption on the Transfer Efficiency of Output Intensity in Semiconductor Microcavities, IEEE Photonics Technol. Lett., 9(2), 179-181, 19970201
  70. Coherent Control of Terahertz Generation in a DC-Biased Semiconductor Microcavity, IEEE Journal of Selected Topics in Quantum Electronics, 2(3), 720-723, 19960901
  71. Electronic States in Edge Quantum Wires on GaAs/AlGaAs Facet Structures, Japanese Journal of Applied Physics, 35(3), 1886-1889, 19960301
  72. Oscillator strength dependence of cavity-polariton mode splitting in semiconductor microcavities, Applied Physics Letters, 68(3), 281-283, 19960101
  73. Transport properties of two-dimensional electron gas in AlGaAs/GaAs selectively doped heterojunctions with embedded InAs quantum dots, Applied Physics Letters, 67(23), 3444-3446, 19951201
  74. Effect of intense intersubband optical excitation on the electron distribution in GaAs/AlAs quantum wells, Japanese Journal of Applied Physics, 34(11), 5989-5992, 19951101
  75. Fabrication of 10-Nanometer-scale GaAs Dot Structures by In Situ Selective Gas Etching with Self-Assembled InAs Dots as a Mask, Japanese Journal of Applied Physics, 34(9B), L1198-L1201, 19950901
  76. Self-formation of 100 nm scale wire structures during molecular beam epitaxial growth of AlGaAs on patterned substrates, Journal of Crystal Growth, 150(1-4), 317-321, 19950501
  77. Effect of Ionized Impurities at Heterointerface on Concentration and Mobility of Two-Dimensional Electrons in Selectively Doped Heterojunction Structures, Japanese Journal of Applied Physics, 33(9A), 4859-4862, 19940901
  78. Control of electron population by intersubband optical excitation in potential-inserted double quantum well structures, Applied Physics Letters, 65(4), 424-426, 19940701
  79. Ultrahigh-Vacuum In-Situ Patterning and MBE Overgrowth of GaAs and AlGaAs Using an InAs Mask Layer, Nanostructures and Quantum Effects= Springer-Verlag, 189-193, 19940401
  80. Quantitative study of oxygen incorporation on MBE-grown AlAs surfaces during growth interruption and its effect on nonradiative recombination in GaAs/AlAs quantum wells, Institute of Physics Conference Series No. 136= IOP Publishing. Ltd., 517-522, 19940401
  81. Oxygen incorporation in GaAs/AlGaAs interfaces grown by molecular beam epitaxy, CONTROL OF SEMICONDUCTOR INTERFACE= Elsevier Science B. V., 93-96, 19940401
  82. Etching of InAs in HCl Gas and Selective Removal of InAs Layer on GaAs in Ultrahigh-Vacuum Processing System, Japanese Journal of Applied Physics, 32(10B), L1496-L1499, 19931001
  83. Detection of oxygen incorporated in molecular-beam epitaxy grown GaAs-on-AlAs interfaces and AlAs layers by secondary ion mass spectrometry, Applied Physics Letters, 63(14), 1924-1926, 19931001
  84. Electron beam-enhanced etching of InAs in Cl2 gas and novel in situ patterning of GaAs with an InAs mask layer, Applied Physics Letters, 63(13), 1789-1791, 19930901
  85. Formation of high mobility two-dimensional electron gas at etch-regrown AlGaAs/GaAs interface prepared by chlorine gas etching and MBE in an UHV multichamber system, Journal of Crystal Growth, 127(1-4), 877-880, 19930401
  86. Incorporation of silicon during MBE growth of GaAs on(111)A substrates, Journal of Crystal Growth, 127(1-4), 871-876, 19930401
  87. Molecular-beam-epitaxial growth of n-AlGaAs on clean Cl2-gas etched GaAs surfaces and the formation of high mobility two-dimensional electron gas at the etch-regrown interfaces, Applied Physics Letters, 61(14), 1658-1660, 19921001
  88. Electrical properties and dopant incorporation mechanisms of Si doped GaAs and (AlGa) As grown on (111) A GaAs surfaces by MBE, Journal of Crystal Growth, 111(1-4), 280-283, 19910601

Publications such as books

  1. 1998/09, OPTICAL PROPERTIES OF LOW-DIMENSIONAL MATERIALS II , Confinement95= World Scientific Publishing, 1998, 09, Scholarly Book, Cocompilation
  2. 2005/06, Terahertz Optoelectronics , Springer Verlag, 2005, 06, Scholarly Book, Cocompilation, 387
  3. 2018, Fano Resonances in Optics and Microwaves: Physics and Applications, Multiple-Resonance Interference, Springer, 2018, Scholarly Book, Joint work, English, Munehiro Nishida, Yutaka Kadoya, 3319997319, 582, 331-356

Invited Lecture, Oral Presentation, Poster Presentation

  1. Terahertz Time-Domain Spectroscopy Using Photoconductive Antenna, Y. Kadoya, Y. Kadoya, M. Nitta, R. Nakamura, 2020 IEEE International Symposium on Radio-Frequency Integration Technology, 2020/09/02, With Invitation, English
  2. Impact of electrical contact between electrode metal and low-temperature-grown GaAs on the signal and noise of photoconductive antennas for THz wave detection, Yutaka Kadoya, SPIE Defense+Commersial Sensing, Next-Generation Spectroscopic Technologies XIII, 2020/04/27, With Invitation, English
  3. Bound states in the continuum in the dielectric waveguide with metal grating controlled by polarization, Ryo Kikkawa, Ryo Kikkawa, Munehiro Nishida, Yutaka Kadoya, The 42nd PhotonIcs & Electromagnetics Research Symposium (PIERS), 2019/12/18, Without Invitation, English, THE ELECTROMAGNETICS ACADEMY, Xiamen, China
  4. Noises in photoconductive antennas under fs pulse excitation, Yutaka Kadoya, The 5th International Symposium on Microwave/THz Science and Applications, 2019/10/02, With Invitation, English
  5. Quantitative evaluation of linear and nonlinear absorption at 1560 nm in low-temperature-grown GaAs for the use in photoconductive antennas, Yutaka Kadoya, The 11th Asia-Pacific Laser Symposium (APLS 2018), 2018/05/30, With Invitation, English
  6. Quantitative discussion on the noise from photo conductive antennas in terahertz time domain systems, Yutaka Kadoya, The joint 4th International Symposium on Microwave/Terahertz Science and Applications (MTSA 2017) and 8th International Symposium on Terahertz Nanoscience (TeraNano VIII), 2017/11/21, With Invitation, English
  7. Optical properties of metal grating on semiconductor substrate: understanding from the bound mode, Ryo Kikkawa, Shogo Shimatani, Munehiro Nishida, Yutaka Kadoya, 8th International Conference on Surface Plasmon Photonics, 2017/05, Without Invitation, English, Taipei, Taiwan
  8. Optical properties of metal grating on semiconductor: Plasmonic effects and Fano type interference in practical structures, Yutaka Kadoya, 7th International Symposium on Terahertz Nanoscience (TeraNano VII), 2016/10/07, With Invitation, English, Porquerolles, France
  9. Direct measurement of nonlinear absorption in low-temperature-grown GaAs at 1.5 mm excitation, Hayato Murata, Yoriko Tomonaga, and Yutaka Kadoya, The Second International Symposium on Frontiers in THz Technology, 2015/08/31, Without Invitation, English, Hamamatsu, Japan
  10. Asymmetric Bull’s Eye Coupler Generating Focused Axial THz Electric Field, Y. Kadoya, Damien Armand, Yoshiyuki Hironaka, Shuta Kanazawa, Yoriko Tominaga, Tomoko Tanaka, and Koichiro Tanaka, 5th International Symposium on Terahertz Nanoscience (TeraNano V), 2014/12/05, With Invitation, English, Martinique, France
  11. Power dependence in photo-response of low-temperature-grown GaAs to 1560 nm pulses, Y. Kadoya, Yuki Tomiyasu, Kouhei Jougataki, Yuya Hirao, and Yoriko Tominaga, International Workshop on Terahertz Technology (IWOTT 2014), 2014/03/09, Without Invitation, English, Zao, Japan
  12. Coherent and incoherent contributions in the nonlinear photo-excitation of low-temperature-grown GaAs THz antenna by 1560 nm pulses, Y. Kadoya, Y. Tomiyasu, Y. Tominaga, 21th International Conference on Applied Electromagnetics and Communications, 2013/10/16, With Invitation, English, Dubrovnik, Croatia
  13. Detection of THz waves by GaAs photoconductive antennas excited at 1560 nm with tight focusing, Y. Kadoya, K. Kajikawa, T. Kataoka, J. Kitagawa, 20th International Conference on Applied Electromagnetics and Communications, 2010/09/22, With Invitation, English, Dubrovnik, Croatia
  14. THz transmission lines - Properites and Applications, Y. Kadoya, N. Sato, T. Tone, and J. Kitagawa, International Workshop on Terahertz Technology, 2009/12/02, With Invitation, English, Osaka, Japan
  15. Plasmonic Yagi-Uda antenna for optical wave, Y. Kadoya, T. Kosako, H. F. Hofmann, 5th Handai Nanoscience and Nanotechnology International Symposium, 2009/09/03, With Invitation, English, Osaka, Japan

Social Activities

Organizing Academic Conferences, etc.

  1. IEEE 11th International Conference on THz Electronics (THz2003), Program Committee, 2003/09
  2. The 28th International Conference on Infrared and Milimeter Waves (IRMMW2003), Program Committee, 2003/09
  3. International Workshop on Terahertz Technology, Program Committee, 2005/11
  4. The Second International Symposium on Frontiers in THz Technology, Organizing Committee, 2015/04, 2015/09
  5. Joint Symposium of The 3rd International Symposium on Microwave/Terahertz Science and Applications and The 6th international Symposium on Terahertz Nanoscience (TeraNano 6), Organizing Committee, 2015/04, 2015/07
  6. The 4th International Symposium on Microwave/Terahertz Science and Applications, International Organizing Committee, 2017/04, 2017/11
  7. 43th International Conference on Infrared, Millimeter and Terahertz Waves, Local Organizing Committee, 2016/09, 2018/09
  8. 43th International Conference on Infrared, Millimeter and Terahertz Waves, Technical Program Committee, 2017/05, 2018/09