研究成果:国際会議

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

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).

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 IEEE ICTON 2011 (International Conference on Transparent Optical Networks), We.A4.2, 2011 (Stockholm).

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, OSA Technical Digest on CD-ROM, JTuA41, 2010 (Rochester).

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 IEEE ICTON 2010 (International Conference on Transparent Optical Networks), Mo.P.10, 2010 (Munich).

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).

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

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).

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).

S. Matsuo, K. Sakaguchi, T. Katsura, K. Yamazaki, H. Kawaguchi, A. Maki, and E. Okada, “Comparison of Algorithms to Calculate Cortical Blood Flow of Guinea Pigs by Laser Speckle Method,” 6th International Conference on Optics-photonics Design and Fabrication Taipei, Taiwan (2008).

K. Sakaguchi, S. Furukawa, T. Katsura, K. Yamazaki, A. Maki, H. Kawaguchi and E. Okada, “Statistical analysis of spatial extent of hemoglobin-concentration change in exposed cortex measured by multi-spectral imaging,” Biomedical Optics Topical Meeting and Tabletop Exhibit, St. Petersburg, U.S.A. (2008).

S. Matsuo, K. Sakaguchi, T. Katsura, K. Yamazaki, H. Kawaguchi, A. Maki, H. Fujii and E. Okada, “Measurement of distribution of blood-flow change in exposed cortex by laser speckle flowgraphy,” Asia Pacific Laser Symposium, Nagoya, Japan (2008).

K. Sakaguchi, S. Furukawa, T. Katsura, K. Yamazaki, A. Maki, H. Kawaguchi and E. Okada, “Multi-spectral imaging of change in haemoglobin concentration in exposed brain caused by auditory stimulation,” Asia Pacific Laser Symposium, Nagoya, Japan (2008).

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).

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).

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

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

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

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).

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).

K. Sakaguchi, S. Furukawa, T. Katsura, K. Yamazaki, A. Maki, H. Kawaguchi and E. Okada, “Path-length correction for the haemoglobin-concentration measurement using the skull cranial window by multi-spectral imaging analysis,” The European Conference on Biomedical Optics, Munich, Germany (2007).

S. Matsuo, K. Sakaguchi, S. Furukawa, T. Katsura, K. Yamazaki, H. Kawaguchi, A. Maki, H. Fujii and E. Okada, “Measurement of the Change in the Cortical Blood Flow of Guinea Pigs by Laser Speckle Flowgraphy,” 3rd Asian and pacific rim symposium on biophotonics & Biophotonics downunder, Cairns, Australia (2007).

K. Sakaguchi, S. Furukawa, T. Katsura, K. Yamazaki, A. Maki, H. Kawaguchi and E. Okada, “Experimental prediction of wavelength-dependent pathlength factor for the multi-spectral imaging analysis of optical intrinsic signal using the skull cranial window,” 3rd Asian and pacific rim symposium on biophotonics & Biophotonics downunder, Cairns, Australia (2007).

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).

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).

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 IEEE ICTON 2006 (International Conference on Transparent Optical Networks), Tu.P.8, 2006 (Nottingham).

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

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

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

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).

S. Furukawa, K. Sakaguchi, T. Katsura, K. Yamazaki, A. Maki, H. Kawaguchi and E. Okada, “Influence of skull cranial window on haemoglobin concentration measurement by multi-spectral imaging,” the 9th International Conference on Optics Within Life Sciences, Taipei, Taiwan (2006).

T. Okuyama, K. Sakaguchi, H. Kawaguchi, and E. Okada, “Experimental estimation of wavelength dependence of optical path length in brain function measurement by near infrared spectroscopy,” the 9th International Conference on Optics Within Life Sciences, Taipei, Taiwan (2006).

K. Sakaguchi, S. Furukawa, T. Katsura, K. Yamazaki, A. Maki, H. Kawaguchi and E. Okada, “Path-length correction for multi-spectral imaging of haemoglobin-concentration change in exposed cortex,” the 9th International Conference on Optics Within Life Sciences, Taipei, Taiwan (2006).

K. Sakaguchi, S. Furukawa, T. Katsura, K. Yamazaki, A. Maki, H. Kawaguchi and E. Okada, “Experimental prediction of wavelength dependence of optical path length for optical intrinsic signal analysis,” The 19th Annual meeting of the IEEE Lasers & Electro-Optics Society, Montreal, Canada (2006).

K. Sakaguchi, S. Furukawa, T. Katsura, A. Maki, H. Kawaguchi and E. Okada, “Path length correction for haemoglobin concentration measurement in exposed cortex by multi-spectral imaging,” Biomedical Optics Topical Meeting and Tabletop Exhibit, Fort Lauderdale, U.S.A. (2006).

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).

K. Sakaguchi, T. Tachibana, K. Yokoyama, Y. Watanabe, S. Sugio, T. Katsura, A. Maki, H. Kawaguchi, H. Fujii and E. Oakada, “Measurements of blood volume and flow in the cortical tissue of guinea pigs with optical imaging system,” 6th Asian-Pacific Conference on Medical and Biological Engineering Tsukuba, Japan, (2005).

K. Sakaguchi, T. Tachibana, S. Furukawa, T. Katsura, A. Maki, H. Kawaguchi and E. Okada, “Estimation of path length factor for measurement of haemoglobin concentration in the exposed cortical tissue,” The European Conference on Biomedical Optics, Munich, Germany (2005).

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).

T. Tachibana, K. Sakaguchi, K. Yokoyama, Y. Watanabe, S. Sugio, T. Katsura, A. Maki, H. Kawaguchi, H. Fujii and E. Okada, “Optical imaging system for measurement of blood volume and flow in exposed brain cortex,” The Second Asian and Pacific Rim Symposium on Biophotonics, Taipei, Taiwan (2004).

K. Sakaguchi, K. Yokoyama, Y. Watanabe and E. Okada, “Estimation of wavelength-dependent path length factor from multi-spectral images of cortical phantom,” The Second Asian and Pacific Rim Symposium on Biophotonics, Taipei, Taiwan (2004).

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).

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).

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).

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).

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).

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).

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).

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).

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).

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).

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).

T. Fukushima, T. Umeda and Y. Cho, Chaotic Pulse Oscillation of a Gain Switched Semiconductor Laser near Threshold, Technical Digest of IQEC'90, pp. 164-166, 1990 (Anaheim).