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April 2008 - March 2009

Bistable Device

  1. T. Mori, Y. Sato, and H. Kawaguchi, “Timing jitter reduction by all-optical signal regeneration using a polarization bistable VCSEL,” J. Lightwave Tech., Vol. 26, No. 16, pp. 2946-2953, August, 2008.
  2. H. Kawaguchi, “Creation of an Ultrafast Optical Memory with a Shift Register Function,” Chemical Industry, Vol. 59, No.6, pp. 444-449, June, 2008.
  3. Y. Sato, K. Furuta, T. Katayama, and H. Kawaguchi, “ Polarization switching in vertical-cavity surface-emitting lasers by asymmetrical current injection,” IEEE Photonics Tech. Lett., Vol. 20, No. 17, pp. 1446-1448, September, 2008.
  4. T. Katayama, T. Kitazawa, and H. Kawaguchi, “All-optical flip-flop operation using 1.55 μm polarization bistable VCSELs,” Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference (CLEO/QELS 2008), CME5, San Jose, USA, May 5, 2008.
  5. H. Kawaguchi, “Optical buffer memory based on polarization bistability in VCSELs,” (Invited) 10th International Conference on Transparent Optical Networks (ICTON 2008), Tu.D2.1, pp.105-108, Athens, Greece, June 24, 2008.
  6. H. Kawaguchi, “Optical buffer memory based on polarization bistabilty in VCSELs,” (Invited) International Conference on Photonics in Switching 2008 (PS2008), D-04-1, Sapporo, Japan, August 6, 2008.
  7. H. Kawaguchi, “Gigahertz all-optical flip-flop operation of polarization- bistable VCSELs,” (Invited) International Conference on Photonics in Switching 2008 (PS2008), Workshop 2 All-optical memories and flip-flops, WS2-1, Sapporo, Japan, August 4, 2008 (no abstract, program only)
  8. T. Katayama, T. Ooi, and H. Kawaguchi, “Optical buffer memory with shift register function using 1.55-μm polarization bistable VCSELs,” The 21st Annual Meeting of the IEEE Lasers & Electro-Optics Society (LEOS 2008), ThG1, pp. 739-740, Newport Beach, USA, November 13, 2008.
  9. H. Kawaguchi, “All-optical flip-flop operation in polarization bistable VCSELs and its application for photonic buffer memory,” (Invited) The 2nd IEEE/ LEOS Winter Topicals 2009, TuB2.4, pp. 140-141, Innsbruck, Austria, January 13, 2009.
  10. T. Katayama, T. Ooi, and H. Kawaguchi, “4-bit all-optical buffer memory with shift register function using polarization bistable VCSELs,” Optical Fiber Communication Conference/National Fiber Optic Engineers Conference 2009 (OFC/NFOEC 2009), JThA33, San Diego, USA, March 26, 2009.
  11. T. Ooi, T. Katayama, and H. Kawaguchi, “One-bit optical buffer memory using a 1.55μm polarization bistable VCSEL,” Extended Abstracts (The 69th Autumn Meeting, 2008); The Japan Society of Applied Physics, 4a-ZN-7, p.1048, Aichi, Japan, September 4, 2008.
  12. T. Katayama, T. Ooi, and H. Kawaguchi, “Optical shift-register using 1.55-μm polarization bistable VCSELs,” Proceedings of the 2008 IEICE Electronics Society Conference, C-4-11, p. 217, Kawasaki, Japan, September 17, 2008.
  13. H. Kawaguchi, “Polarization bistable VCSELs and photonic memory,” (Invited), 29th Annual Meeting of The Laser Society of Japan, F110pVI01, p.161-162, Tokushima, Japan, January 10, 2009.
  14. H. Kawaguchi, “All-optical signal processing using polarization bistable VCSELs,” Report of a Joint Research Project Supported by the Ministry of Education, Culture, Sports, Science and Technology (MEXT) through the Grant-in-Aid for Scientific Research on Priority Areas, pp. 64-67, Miyagi, Japan, June 3, 2008.
  15. H. Kawaguchi, and T. Katayama, “All-optical signal processing using polarization bistable VCSELs,” Symposium on Innovation for New-Generation Optical Communications (the Grant-in-Aid for Scientific Research on Priority Areas, the Ministry of Education, culture, sports, Science and Technology (MEXT)), pp.205-214, Tokyo, Japan, January 16, 2009.

Spintronics

  1. S. Iba, H. Fujino, T. Fujimoto, S. Koh, and H. Kawaguchi, “Correlation between electron spin relaxiation time and hetero-interface roughness in (110)-oriented GaAs/AlGaAs multiple-quantum wells,” Physica E, Vol. 41, issue 5, pp. 870-875, March, 2009.
  2. S. Iba, H. Fujino, T. Fujimoto, S. Koh, and H. Kawaguchi, “Effect of growth interruption on electron spin relaxation in (110)-oriented GaAs/AlGaAs quantum wells,” The 2008 International Conference on Solid State Devices and Materials (SSDM 2008), P-12-4, pp. 666-667, Tsukuba, Japan, September 25, 2008.
  3. S. Iba, H. Fujino, T. Fujimoto, S. Koh, and H. Kawaguchi, “Effect of growth interruption on electron spin lifetime in GaAs/AlGaAs (110) guantum wells,” Extended Abstracts (The 69th Autumn Meeting, 2008); The Japan Society of Applied Physics, 3a-P8-1, p.672, Aichi, Japan, September 3, 2008.
  4. H. Fujino, S.Iba, T. Fujimoto, S. Koh, and H. Kawaguchi, “Electron spin relaxiation time in (110)-oriented InGaAs/GaAs quantum wells grown by molecular beam epitaxy,” The 8th GIST/NAIST Joint Symposium on Advanced Materials, Poster 24, p.42, Nara, Japan, November 26-27, 2008.

Miscellaneous

  1. T. Ohsugi, S. N.Takeda, Y. Tanigawa, M. Morita, Y. Kato, J. Koike, Y. Yamanaka, H. Daimon, S. Koh, H. Kawaguchi, M. Yoshimaru, T. Imamura, “Valence Band Dispersion in GaAs(001) Surface Measured by Angle-resolved Photoemisson Spectroscopy,” Extended Abstracts of the 14th Workshop on Gate Stack Technology and Physics (The Japan Society of Applied Physics) P-26, pp. 215-218, Tokyo, January 2008.

Press release

  1. "Multiple optical signals, simultaneous processing," Nikkan Kogyo Shimbun (Business & Technology Daily News), 3/27/2009.
  2. "Optical bits, controlling one by one," Nikkei Business Daily,3/27/2009.
  3. "The first optical memory realized," Science News, 4/3/2009.