Publications

Journal papers

1. S. Shinohara, T. Fukushima, S. Sunada, T. Harayama, and K. Arai, “Long-path formation in a deformed microdisk laser,” Phys. Rev. A 94 (1), 013831 (2016).

2. S. Sunada, S. Shinohara, T. Fukushima, and T. Harayama, “Signature of wave chaos in spectral characteristics of microcavity lasers,” Phys. Rev. Lett. 116 (20), 203903 (2016).

3. Y. Tokuda, K. Sakaguchi, K. Takano, Y. Yamaguchi, and T. Fukushima, “Crossing behaviors of optical resonance modes in metallic metamaterials,” Appl. Phys. Express 9 (3), 032201 (2016) .

4. T. Fukushima, K. Sakaguchi, and Y. Tokuda, “Light propagation in a Penrose unilluminable room,” Opt. Express 23 (13), 17431-17436 (2015).

5.S. Shinohara, S. Sunada, T. Fukushima, T. Harayama, K. Arai, and K. Yoshimura, “Efficient optical path folding by using multiple total internal reflections in a microcavity,” Appl. Phys. Lett. 105 (24), 151111 (2014).

6. Y. Tokuda, K. Sakaguchi, K. Takano, T. Fukushima, and M. Hangyo, “Investigation of fade-out mechanism of resonance modes in optical transmission using stacked metallic sub-wavelength slit arrays,” J. Appl. Phys. 115 (24), 243104 (2014).

7. S. Sunada, T. Fukushima, S. Shinohara, T. Harayama, K. Arai, and M. Adachi, “A compact chaotic laser device with a two-dimensional external cavity structure,” Appl. Phys. Lett. 104(24), 241105 (2014).

8. T. Fukushima, S. Shinohara, S. Sunada, T. Harayama, K. Sakaguchi, and Y. Tokuda, “Lasing of TM modes in a two-dimensional GaAs microlaser,” Opt. Express 22(10), 11912-11917 (2014).

9. S. Shinohara, T. Fukushima, S. Sunada, T. Harayama, K. Arai, and K. Yoshimura, “Anticorrelated bidirectional output of quasistadium-shaped semiconductor microlasers,” Opt. Rev. 21(2), 113-116 (2014).

10. T. Fukushima, S. Shinohara, S. Sunada, T. Harayama, K. Arai, K. Sakaguchi, and Y. Tokuda, “Selective excitation of lowest-order transverse ring modes in a quasi-stadium laser diode,” Opt. Lett. 38(20), 4158-4161 (2013).

11. T. Fukushima, K. Sakaguchi, M. Hangyo, and Y. Tokuda, “Analysis of resonator modes in two-dimensional laser cavities containing a left-handed material,” Opt. Rev. 20(4), 293-295 (2013).

12. S. Sunada, T. Fukushima, S. Shinohara, T. Harayama, and M. Adachi, “Stable single-wavelength emission from fully chaotic microcavity lasers,” Phys. Rev. A 88(1), 013802 (2013).

13. Y. Tokuda, K. Sakaguchi, T. Nishihara, K. Takano, T. Fukushima, and M. Hangyo, “Spectroscopic functions of multi-stacked metallic plates with modulated slit arrays,” Appl. Phys. Express 6(6), 062602 (2013).

14. Y. Tokuda, K. Sakaguchi, K. Takano, T. Fukushima, and M. Hangyo, “Remarkable transmission characteristics of optical waves through modulated double-layered metallic slit arrays,” AIP Advances 2(4), 042112 (2012).

15. T. Fukushima, K. Sakaguchi, and Y. Tokuda, “Quality factor of circular laser diode beam tailored by optical interference,” Opt. Rev. 19(5), 328-331 (2012).

16. T. Fukushima, S. Sunada, T. Harayama, K. Sakaguchi, and Y. Tokuda,“Lowest order axial and ring mode lasing in confocal quasi-stadium laser diodes,” Appl. Opt. 51(14), 2515-2520 (2012).
※ This paper was selected by the Editors for publication in the Virtual Journal for Biomedical Optics 7(7),(2012).

17. Y. Tokuda, H. Takaiwa, K. Sakaguchi, Y. Yakiyama, K. Takano, K. Akiyama, T. Fukushima, and M. Hangyo, “Optical phased array functions in double-layered metallic plate systems with artificially modulated slit arrays,” Appl. Phys. Express 5, 042502 (2012).

18. T. Fukushima, K. Nishiyama, K. Sakaguchi, and Y. Tokuda, “Resonator modes of quasi-stadium laser diodes with unstable optical cavities (in Japanese),” The Review of Laser Engineering 39,537-542 (2011).

19. S. Shinohara, T. Harayama, T. Fukushima, M. Hentschel, S. Sunada, and E. E. Narimanov, “Chaos-assisted emission from asymmetric resonant cavity microlasers,” Phys. Rev. A 83(5), 053837 (2011).

20. T. Fukushima, K. Sakaguchi, and Y. Tokuda, “Laser diode beam shaping by optical interference,” Opt. Rev. 18(3), 287-292 (2011).

21. S. Shinohara, T. Harayama, and T. Fukushima, “Fresnel filtering of Gaussian beams in microvavities,” Opt. Lett. 36(6), 1023-1025 (2011).

22. S. Shinohara, T. Harayama, T. Fukushima, M. Hentschel, T. Sasaki, and E. E. Narimanov, “Chaos-assisted directional light emission from microcavity lasers,” Phys. Rev. Lett. 104 , 163902 (2010).

23. T. Fukushima, Y. Handa, and K. Miyahara, “Design of optical coupling systems between two-dimensional quasi-stadium laser diodes and single-mode optical fibers,” Opt. Rev. 16(5), 540-547 (2009).

24. T. Fukushima, K. Miyahara, and N. Nakata, “Beam profile tailoring of laser diodes using Lloyd’s mirror interference,” IEICE Trans. Electron. E92-C(8), 1095-1097 (2009).

25. M. Choi, T. Fukushima, and T. Harayama, “Alternate oscillations in quasistadium laser diodes,” Phys. Rev. A 77(6), 063814 (2008).

26. S. Shinohara, T. Fukushima, and T. Harayama, “Light emission pattern from stadium-shaped semiconductor microcavity lasers,” Phys. Rev. A 77(3), 033807 (2008).

27. T. Fukushima, S. Shinohara, and T. Harayama, “Light beam output from diamond-shaped total-internal reflection modes by using intracavity air gaps,” Opt. Express 15(25), 17392-17400 (2007).

28. T. Fukushima, T. Tanaka, and T. Harayama, “High-quality lowest-loss-mode lasing in GaAs quasi-stadium laser diodes having unstable resonators,” Opt. Lett. 32(23), 3397-3399 (2007).

29. T. Tanaka, M. Hentschel, T. Fukushima, and T. Harayama, “Classical phase space revealed by coherent light,” Phys. Rev. Lett. 98(3), 033902 (2007).

30. M. Choi, T. Tanaka, T. Fukushima, and T. Harayama, “Control of directional emission in quasistadium microcavity laser diodes with two electrodes,” Appl. Phys. Lett. 88(21), 211110 (2006).

31. T. Fukushima, T. Harayama, and J. Wiersig, “Ray-wave correspondence in an unstable quasistadium laser resonator,” Phys. Rev. A 73(2), 023816 (2006).

32. T. Fukushima, T. Tanaka, and T. Harayama, “Ring and axis mode switching in multielectrode strained InGaAsP multiple-quantum-well quasistadium laser diodes,” Appl. Phys. Lett. 87(19), 191103 (2005).

33. T. Fukushima, T. Tanaka, and T. Harayama, “Unidirectional beam emission from strained InGaAsP multiple-quantum well quasistadium laser diodes,” Appl. Phys. Lett. 86(17), 171103 (2005).

34. T. Fukushima and T. Harayama, “Stadium and quasi-stadium laser diodes,” IEEE J. Select. Topics Quantum Electron. 10(5), 1039-1051 (2004), (invited paper).

35. T. Fukushima, T. Harayama, T. Miyasaka and P. O. Vaccaro, “Morphological dependence of lasing modes in two-dimensional quasi-stadium laser diodes,” J. Opt. Soc. Amer. B 21(5), 935-943 (2004).

36. T.Harayama, T. Fukushima, S. Sunada, and K. S. Ikeda, “Asymmetric stationary lasing patterns in 2D symmetric microcavities,” Phys. Rev. Lett. 91(7), 073903 (2003).

37. T. Harayama, T. Fukushima, P. Davis, P. O. Vaccaro, T. Miyasaka, T. Nishimura, and T. Aida, “Lasing on scar modes in fully chaotic microcavities,” Phys. Rev. E 67, 015207 (2003).

38. T. Fukushima, T. Harayama, P. Davis, P. O. Vaccaro, T. Nishimura, and T. Aida, “Quasi-stadium laser diodes with an unstable resonator condition,” Opt. Lett. 28(6), 408-410 (2003).

39. T. Fukushima, T. Harayama, P. Davis, P. O. Vaccaro, T. Nishimura, and T. Aida, “Ring and axis mode lasing in quasi-stadium laser diodes with concentric end mirrors, Opt. Lett. 27(16), 1430-1432 (2002).

40. T. Fukushima, H. Miyazaki, T. Ando, T. Tanaka, and T. Sakamoto, “Nonlinear dynamics in directly modulated self-pulsating laser diodes with a highly doped saturable absorption layer,” Jpn. J. Appl. Phys. 41(1), Part1, 117-124 (2002).

41. T. Fukushima, “Analysis of resonator eigenmodes in symmetric quasi-stadium laser diodes,” J. Lightwave Technol. 18(12), 2208-2216 (2000) .

42. T. Fukushima, K. Hanada, and T. Sakamoto, “Optical signal inverter based on injection locking of laser diode for directly modulated optical pulses,” Jpn. J. Appl. Phys. 39(3A/B), Part 2, L212-L214 (2000).

43. T. Fukushima, T. Tanaka, and T. Sakamoto, “Stability of optical dynamic memory operation under period-two state of chaotic system,” Jpn. J. Appl. Phys. 39(1), Part 1, 114-119 (2000).

44. T. Fukushima and T. Sakamoto, “Chaos in coupled semiconductor lasers with an electronic delayed feedback caused by injection locking,” IEEE J. Quantum Electron. 34(5), 750-758 (1998).

45. T. Fukushima, S. A. Biellak, Y. Sun, and A. E. Siegman, “Beam propagation behavior in a quasi-stadium laser diode,” Opt. Express 2(2), 21-28 (1998).

46. T. Fukushima, T. Yokota, and T. Sakamoto, “Fabrication of 7X6 multimode optical fiber grating demultiplexer-star coupler using a single GRIN-rod lens,” J. Lightwave Technol. 15(10), 1938-1946 (1997).

47. T. Fukushima and T. Sakamoto, “Optical signal inverter using injection locking of coupled semiconductor lasers,” Jpn. J. Appl. Phys. 36(3A), Part 2, L280-L282 (1997).

48. T. Fukushima and T. Sakamoto, “Multimode optical fiber demultiplexer-star coupler using a single gradient-index-rod lens and a multi-facet grating,” Opt. Rev. 4(1), A80-A84 (1997).

49. T. Fukushima and T. Sakamoto, “A 7X6 optical fiber grating demultiplexer-multiposition switch for 0.64-0.88μm band,” J. Lightwave Technol. 14(5), 867-872 (1996).

50. T. Fukushima and T. Sakamoto, “Kerr-effect-induced S-R flip-flop operation in an optical fiber loop resonator with double couplers,” Opt. Lett. 20(10), 1119-1121 (1995).

51. T. Fukushima, A. Furuya, Y. Kito, H. Sudo, M. Sugano, and T. Tanahashi, “Catastrophic optical damage of AlGaInP visible semiconductor lasers under high power operation (in Japanese),” The Transactions of the Institute of Electronics, Information and Communication Engineers C J78-C-I(3),143-149 (1995).
(Translated Paper) T. Fukushima, A. Furuya, Y. Kito, H. Sudo, M. Sugano, and T. Tanahashi, “Catastrophic optical damage of AlGaInP visible laser diodes under high-power operation,” Electronics and Communications in Japan 78(7), Part 2, 11-19 (1995).

52. T. Fukushima, T. Sakamoto, “Optical chaos in nonlinear etalon under triode operation (in Japanese),” The Transactions of the Institute of Electronics, Information and Communication Engineers C J78-C-I(2),119-121 (1995).

53. T. Fukushima, A. Furuya, Y. Kito, H. Sudo, M. Sugano, and T. Tanahashi, “Evaluation method of facet and bulk bulk degradation in semiconductor lasers (in Japanese),” The Transactions of the Institute of Electronics, Information and Communication Engineers C J78-C-I(2),73-79 (1995).
(Translated Paper) T. Fukushima, A. Furuya, Y. Kito, H. Sudo, M. Sugano, and T. Tanahashi, “Method of evaluating facet and bulk degradation in semiconductor lasers,” Electronics and Communications in Japan 78(6), Part 2, 65-73 (1995).

54. T. Fukushima, A. Furuya, Y. Kito, M. Sugano, H. Sudo, and T. Tanahashi, “Facet degradation of AlGaInP visible semiconductor lasers with facet passivation,” Jpn. J. Appl. Phys. 33(7B), Part 2, L1007-L1009 (1994).

55. C. Anayama, A. Furuya, M. Kondo, Y. Sekiguchi, Y. Kito, T. Fukushima, M. Sugano, and T. Tanahashi, “Alternate doping of p-type and n-type impurities for AlGaInP selfaligned stepped substrate (S 3 ) lasers,” Electron. Lett. 30(7), 565-566 (1994).

56. A. Furuya, T. Fukushima, Y. Kito, C. Anayama, M. Sugano, H. Sudo, M. Kondo, and T. Tanahashi, “Stable high-power operation of self-aligned stepped substrate (S 3 ) AlGaInP visible laser diode with small beam aspect ratio,” Electron. Lett. 30(5), 416-417 (1994).

57. C. Anayama, H. Sekiguchi, M. Kondo, H. Sudo, T. Fukushima, A. Furuya, and T. Tanahashi, “One-step-metalorganic-vapor-phase- epitaxy-grown AlGaInP visible laser using simultaneous impurity doping,” Appl. Phys. Lett. 63(13), 1736-1738 (1993).

58. A. Furuya, M. Sugano, Y. Kito, T. Fukushima, H. Sudo, C. Anayama, M. Kondo, and T. Tanahashi, “High-power operation of selfaligned stepped substrate (S 3 ) AlGaInP visible laser diode,” Electron. Lett. 29(15), 1364-1365 (1993).

59. A. Furuya, Y. Kito, T. Fukushima, M. Sugano, H. Sudo, C. Anayama, M. Kondo, and T. Tanahashi, “Self-aligned bend waveguide (SBW) AlGaInP visible laser diode with small beam astigmatism,” IEEE J. Quantum Electron. 29(6), 1869-1873 (1993).

 


Review papers

 


International Conferences

1. T. Fukushima, Fully illuminated modes in a Penrose unilluminable room microcavity, Proceedings of ICTON 2019 (International Conference on Transparent Optical Networks), Sa.A4.2, 2019 (Angers), (invited talk).

2. T. Fukushima, Modal interactions in microstadium optical cavities, Proceedings of ICTON 2018 (International Conference on Transparent Optical Networks), We.D4.2, 2018 (Bucharest), (invited talk).

3. T. Fukushima, Transition from WG modes to wave chaotic modes in microstadium cavities, The 2nd Internationl Workshop on Asymmetric Microcavity and Wave Chaos, Oral No. 24, May 20, 2018 (Fuzhou), (invited talk).

4. T. Fukushima, Wave chaotic modes in a Penrose unilluminable room optical microcavity, EMN Meeting on Droplets 2018 (EMN Victoria Meeting & Laser Sources 2018), A26, April 10, 2018 (Victoria), (invited talk).

5. T. Fukushima, Approximation accuracy of Gaussian-optical approach applied to two-dimensional optical microcavities, Proceedings of ICTON 2017 (International Conference on Transparent Optical Networks), We.D4.3, 2017 (Girona), (invited talk).

6. T. Fukushima, Resonance modes in a Penrose unilluminble room chaotic microcavity, Workshop on Asymmetric Microcavity and Wave Chaos, March 22, 2017 (Beijing), (invited talk).

7. T. Fukushima, Lasing modes in chaotic microcavity laser diodes, EMN Meeting on Quantum Matter, A37, 2016 (Port Louis), (invited talk).

8. S. Sekiguchi, S. Shinohara, T. Fukushima, and T. Harayama, Effects of phase space sticky motions in nearly-integrable dielectric billiards on far-field patterns, Proceedings of the NOLTA 2016 (the 2016 International Symposium on Nonlinear Theory and its Applications), Paper C2L-B5, 2016 (Atami).

9. K. Kawashima, S. Shinohara, S. Sunada, T. Fukushima, and T. Harayama, Asymmetric emission caused by chaos-assisted tunneling and synchronization in two-dimensional microcavity lasers, Proceedings of the NOLTA 2016 (the 2016 International Symposium on Nonlinear Theory and its Applications), Paper C1L-B3, 2016 (Atami).

10. S. Sunada, S. Shinohara, T. Fukushima, and T. Harayama, Wave-chaos-induced single-frequency lasing in microcavities, Proceedings of the NOLTA 2016 (the 2016 International Symposium on Nonlinear Theory and its Applications), Paper C1L-B2, 2016 (Atami).

11. T. Fukushima, T. Sarata, K. Sakaguchi, and Y. Tokuda, Analysis of resonator modes in a Penrose unilluminable room, Proceedings of the NOLTA 2016 (the 2016 International Symposium on Nonlinear Theory and its Applications), Paper C1L-B1, 2016 (Atami).

12. S. Orihara, K. Koyama, S. Shinohara, S. Sunada, T. Fukushima, and T. Harayama, Optimal design of two-dimensional external cavities for delayed optical feedback, Proceedings of the NOLTA 2016 (the 2016 International Symposium on Nonlinear Theory and its Applications), Paper B3L-B3, 2016 (Atami).

13. S. Suzuki, S. Sunada, S. Shinohara, T. Fukushima, and T. Harayama, Fast physical random bit generation by chaotic lasers with delayed feedback using extremely short external cavities, Proceedings of the NOLTA 2016 (the 2016 International Symposium on Nonlinear Theory and its Applications), Paper B3L-B2, 2016 (Atami).

14. T. Fukushima, K. Sakaguchi, and Y. Tokuda, Fast beam switching operation of two-dimensional microcavity laser diode, Proceedings of ICTON 2016 (International Conference on Transparent Optical Networks), We.A6.4, 2016 (Trento), (invited talk).

15. T. Fukushima, Selective excitation of spatial modes in quasi-stadium microcavity laser diodes, WOMA2015 (The 4th International Workshop on Microcavities and Their Applications), O024, 2015 (Sapporo), (invited talk).

16. T. Fukushima, S. Shinohara, S. Sunada, T. Harayama, K. Sakaguchi, and Y. Tokuda, Transverse magnetic emission of GaAs unstrained quantum-well microcavity lasers, Proceedings of ICTON 2015 (International Conference on Transparent Optical Networks), We.A6.1, 2015 (Budapest), (invited talk).

17. T. Fukushima, S. Shinohara, S. Sunada, T. Harayama, K. Arai, K. Yoshimura, K. Sakaguchi, and Y. Tokuda, Compact two-dimensional multipass GaAs optical cavity with a long path length, Frontiers in Optics 2014, OSA Technical Digest (online), JW3A.31, 2014 (Tuscon).

18. T. Fukushima, S. Shinohara, S. Sunada, T. Harayama, K. Sakaguchi, and Y. Tokuda, Ray dynamical simulation of Penrose unilluminable room cavity, Frontiers in Optics 2013, OSA Technical Digest on CD-ROM, JW3A.19, 2013 (Orlando).

19. S. Shinohara, T. Fukushima, S. Sunada, T. Harayama, K. Arai, and K. Yoshimura, Nonlinear modal dynamics in two-dimensional cavity microlasers, 2013 International Symposium on Nonlinear Theory and its Applications (NOLTA 2013), vol.2, pp. 409-412, 2013 (Santa Fe).

20. T. Fukushima and T. Harayama, Lasing characteristics of microstadium and quasi-stadium laser diodes, 8th International Conference on Optics-Photonics Design & Fabrication Technical Digest, 3S2-05, 2012 (St. Petersburg), (invited talk).

21. T. Fukushima, K. Sakaguchi, and Y. Tokuda, Quality Factor of Laser Diode Beam Tailored by Lloyd’s Mirror Interference, CLEO Pacific Rim 2011, pp. 1211-1213, 2011 (Sydney).

22. T. Fukushima, S. Sunada, T. Harayama, K. Sakaguchi, and Y. Tokuda, Selective Excitation of Lowest-Order Axial and Ring Modes in Confocal Quasi-Stadium Laser Diodes, Proceedings of ICTON 2011 (International Conference on Transparent Optical Networks), We.A4.2, 2011 (Stockholm).

23. T. Fukushima, K. Sakaguchi, and Y. Tokuda, Tailoring the Beam Profile of an 808-nm Pump Laser Diode Using Lloyd’s Mirror Interference, Frontiers in Optics 2010, OSA Technical Digest on CD-ROM, JTuA41, 2010 (Rochester).

24. T. Fukushima, K. Nishiyama, K. Sakaguchi, and Y. Tokuda, Resonator Modes in a Two-Dimensional Quasi-Stadium Laser Diode with Concave End Mirrors, Proceedings of ICTON 2010 (International Conference on Transparent Optical Networks), Mo.P.10, 2010 (Munich).

25. T. Fukushima, K. Miyahara and N. Nakata, Beam Shaping of Laser Diodes Using Lloyd’s Mirror Interference, CLEO/Pacific Rim 2009, TuP2-06, 2009 (Shanghai).

26. M. Choi, S. Shinohara, T. Fukushima and T. Harayama, Convergence of Far Field Characteristics upon Ray Dynamics in Stadium Microlasers, Frontiers in Optics 2008, OSA Technical Digest on CD-ROM, FThP3, 2008 (Rochester).

27. T. Fukushima, Y. Handa and T. Harayama, Optical Coupling System between an Unstable Quasi-Stadium Laser Diode and Multimode Optical Fibers, Proceedings of ILLMC 2008 (3-rd International Laser Light-Wave and Microwave Conference), PS-6, 2008 (Yokohama).

28. T. Fukushima, K. Egawa and T. Harayama, Design of an Optical Coupling System between a Confocal Quasi-Stadium Laser Diode and Multimode Optical Fibers, Proceedings of ILLMC 2008 (3-rd International Laser Light-Wave and Microwave Conference), 24-TP1-4, 2008 (Yokohama).

29. M. Choi, T. Fukushima and T. Harayama, Alternate Oscillations with π Phase Difference in Quasi-Stadium Laser Diodes, CLEO/Pacific Rim 2007, WG1-3, 2007 (Seoul).

30. M. Choi, T. Fukushima and T. Harayama, Two Mode Interaction in Quasi-Stadium Lser Diodes, Proc. of IEEE ICTON 2007 (International Conference on Transparent Optical Networks), Tu.P.14, 2007 (Rome).

31. Y. Nakae, H. Takehana, T. Sasaki, T. Fukushima and T. Harayama, Beam Mode Observation in Quasi-Stadium Laser Diodes, Proc. of ICTON 2007 (International Conference on Transparent Optical Networks), Tu.P.13, 2007 (Rome).

32. T. Sasaki, Y. Nakae, M. Choi, T. Fukushima and T. Harayama, Optical Control of Ring Modes using Tandem Quasi-Stadium Laswer Diodes, Proc. of ICTON 2007 (International Conference on Transparent Optical Networks), Tu.P.10, 2007 (Rome).

33. T. Harayama and T. Fukushima, Theory and Applications of 2D Microcavity Lasers, Proc. of ICTON 2007 (International Conference on Transparent Optical Networks), Mo.D3.1, 2007 (Rome).

34. T. Fukushima and T. Harayama, Axis and Ring Mode Switching in Multi-Electrode GaAs Quasi-Stadium Laser Diodes, CLEO/QELS and PhAST Technical Digest on CD-ROM (The Optical Society of America, Washington, DC, 2007), JWA127, 2007 (Baltimore).

35. T. Harayama, T. Fukushima, T. Sunada and K. S. Ikeda, Chaos and Multi-Attractors in Fully Chaotic 2D Microcavity Lasers, Progress of Theoretical Physics Supplement, No. 166, pp. 104-111, 2007 (Osaka).

36. T. Fukushima and T. Harayama, Lowest Order Ring Mode Lasing in Confocal Quasi-Stadium Laser Diodes, 2006 IEEE LEOS Annual Meeting Conference Proceedings, ThZ2, 2006 (Montreal).

37. T. Tanaka, M. Hentschel, T. Fukushima and T. Harayama, Morphological Dependence of Emission Patterns from Oval-Billiard Microcavity Laser Diodes, 2006 IEEE LEOS Annual Meeting Conference Proceedings, ThB3, 2006 (Montreal).

38. M. Choi, T. Tanaka, T. Fukushima and T. Harayama, Control of Directional Emission in Two-Dimensional Quasi-Stadium Micro-Cavity Laser Diodes with Two-Electrodes, Proc. of ICTON 2006 (International Conference on Transparent Optical Networks), Tu.P.8, 2006 (Nottingham).

39. T. Tanaka, M. Hentschel, T. Fukushima and T. Harayama, Directional Emission Patterns from the Oval-Billiard Microcavity Laser Diodes, Proc. of ICTON 2006 (International Conference on Transparent Optical Networks), Tu.P.9, 2006 (Nottingham).

40. Y. Nakae, T. Fukushima, T. Tanaka and T. Harayama, Ring and Axis Mode Switching in Quasi-Stadium Laser Diodes with Multi-Electordes, Proc. of ICTON 2006 (International Conference on Transparent Optical Networks), Tu.P.12, 2006 (Nottingham).

41. T. Sasaki, T. Fukushima, T. Tanaka and T. Harayama, Locking of Two Modes and Unidirectional Beam Emission in Quasi-Stadium Laser Diodes, Proc. of ICTON 2006 (International Conference on Transparent Optical Networks), Tu.P.13, 2006 (Nottingham).

42. T. Fukushima and T. Harayama, Mode Switching by Optical Injection in Tandem Quasi-Stadium Laser Diodes, CLEO/QELS and PhAST Technical Digest on CD-ROM (The Optical Society of America, Washington, DC, 2006), JWB4, 2006 (Long Beach).

43. T. Fukushima, T. Tanaka and T. Harayama, Unidirectional Beam Emission from Confocal Quasi-Stadium Laser Diodes, CLEO/QELS and PhAST Technical Digest on CD-ROM (The Optical Society of America, Washington, DC, 2005), CMFF6, 2005 (Baltimore).

44. T. Fukushima, Stadium and quasi-stadium laser diodes, APCTP Focus Program on Quantum Chaos and Its Application to Mesoscopic Physics, 2004 (Pohang) (invited talk).

45. T. Fukushima, T. Harayama and J. Wiersig, Ray-wave Correspondence in a Fully Chaotic Quasi-Stadium Laser Resonator, CLEO/IQEC and PhAST Technical Digest on CD-ROM (The Optical Society of America, Washington, DC, 2004), IThG19, 2004 (San Francisco).

46. T. Fukushima, T. Harayama, P. Davis, P. O. Vaccaro, T. Nishimura and T. Aida, Asymmetric Beam Emission from a Symmetric Confocal Quasi-stadium Laser Diode due to Locking of Two Ring-Trajectory Modes, CLEO/QELS Technical Digest on CD-ROM (The Optical Society of America, Washington, DC, 2003), CWK7, 2003 (Baltimore).

47. T. Fukushima, T. Harayama, P. Davis, P. O. Vaccaro, T. Nishimura and T. Aida, Lasing Modes in Quasi-Stadium Laser Diodes under a Concentric Resonator Condition, IQEC 2002 Technical Digest, p. 123, 2002 (Moscow).

48. T. Fukushima, T. Tanaka, T. Ando and T. Sakamoto, Nonlinear Dynamics in Directly Modulated 660 nm Self-Pulsating Laser Diodes, 2001 International Laser, Lightwave and Microwave Conference Proceedings, pp. 25-28, 2001 (Shanghai).

49. T. Fukushima and T. Sakamoto, Optical Fiber Multiplexer Using a Single GRIN-Rod Lens and a Planar Microlens Array, 14th International Conference on Optical Fiber Sensors Conference Proceedings, pp. 178-181, 2000 (Venice).

50. T. Fukushima, Resonator eigenmodes in quasi-stadium laser diodes, Abstracts of 2000 ATR Workshop on Quantum and Laser Chaos, pp. 21-22, 2000 (Kyoto) (invited talk).

51. T. Fukushima and T. Sakamoto, Opto-electric hybrid chaotic system using injection locking in coupled laser diodes, Abstracts of ATR Workshop on Laser Chaos, p.17, 1998 (Kyoto).

52. T. Fukushima, S. A. Biellak, Y. Sun, C. G. Fanning, Y. Cheng, S. S. Wong and A. E. Siegman, Lasing Characteristics of a Quasi-Stadium Laser Diode, CLEO’97 Technical Digest, pp. 227-228, 1997 (Baltimore).

53. T. Fukushima and T. Sakamoto, Optical Fiber Demultiplexer-Star Coupler Using a Single GRIN-Rod Lens and a Multi-Facet Grating, Conference Proceedings of 11th International Conference on Optical Fiber Sensors, pp. 490-493, 1996 (Sapporo).

54. T. Fukushima and T. Sakamoto, All Optical Logic Operations Using Kerr Bistability in a Four-Port Optical Fiber Loop Resonator, 1995 International Laser, Lightwave and Microwave Conference Proceedings, pp. 250-253, 1995 (Shanghai).

55. T. Sakamoto and T. Fukushima, Numerical Comparison between the Kerr and the Saturable Nonlinear Amplifying Fiber Loop Resonator, 1995 International Laser, Lightwave and Microwave Conference Proceedings, pp. 244-247, 1995 (Shanghai).

56. T. Sakamoto and T. Fukushima, Nonlinear Steady-State Analysis of the GaAs Etalon with a Delayed Amplifying Feedback, 1995 International Laser, Lightwave and Microwave Conference Proceedings, pp. 136-139, 1995 (Shanghai).

57. M. Sugano, Y. Kito, A. Furuya, T. Fukushima, H. Sudo, C. Anayama, M. Kondo and T. Tanahashi, High-Power Operation of Self-Aligned Stepped Substrate (S3) AlGaInP Visible Laser Diode, LEOS 1993 Summer Topical Meeting Digest on Visible Semiconductor Lasers, pp. 39-40, 1993 (Santa Barbara).

58. A. Furuya, Y. Kito, T. Fukushima, M. Sugano, H. Sudo, C. Anayama, M. Kondo and T. Tanahashi, High Power Operation of Small Beam Astigmatism AlGaInP Self-Aligned Bend Waveguide Laser Diode, Conference Digest 13th IEEE International Semiconductor Laser Conference, pp. 92-93, 1992 (Takamatsu).

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