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1990 Fiscal Year Final Research Report Summary

Persistent Hole Burning and Femtosecond Photon Echo Using Diode Laser

Research Project

Project/Area Number 01460045
Research Category

Grant-in-Aid for General Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field 物理学一般
Research InstitutionUniversity of Tsukuba

Principal Investigator

NAKATSUKA Hiroki  Inst. of Appl. Phys. Univ. of Tsukuba Associate Professor, 物理工学系, 助教授 (10111915)

Co-Investigator(Kenkyū-buntansha) ONARI Seinosuke  Inst. of Appl. Phys. Univ. of Tsukuba Professor, 物理工学系, 教授 (70015824)
Project Period (FY) 1989 – 1990
Keywordspersistent hole burning / diode laser / photon echo / optical memory / fractal / organic dye / polymer glass / spectral diffusion
Research Abstract

1. The incoherent light photon echoes by using a cw multi-mode diode laser or a superluminescent diode have been performed for the first time.
2. Persistent hole burning has been attracting much attention because of its potentiality as future multi-wavelength optical memory. We found out an efficient persistent hole burning material HITC/PVA at the wavelength region of conventional diode lasers, near 780 nm.
3. Using the wavelength sweep by changing the injection current into diode lasers, we observed the time evolution of the persistent hole in HITC/PVA with a temporal resolution of 10 msec.
4. We found that the persistent hole in HITC/PVA can be proved more than 1000 times when it was once burnt.
5. By using the methods mentioned above, we observed spectral diffusion and self-refilling process of the persistent hole in HITC/PVA.
6. We observed the temporal evolution of persistent holes in two samples HITC/PVA (polymeric host) and HITC/EtOH (monomeric host), and explained the behavior by assuming that the two level systems in the host are spatially distributed like a fractal. This theory gives the photon echo decay curve, persistent hole shape and the temperature dependence of the hole width which depend on the fractal dimension D. By comparison with the experiment, we obtained D=2.1 2.3 for HITC/PVA and D=2.7 for HITC/EtOH.

  • Research Products

    (15 results)

All Other

All Publications (15 results)

  • [Publications] R. Yano: "Ultratast Dephasing and Incoherent Light Photon Echoes in Organic Amorphous Systems" Jornal of the Physical Society of Japan. 58. 3814-3821 (1989)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 中塚 宏樹: "インコヒ-レント光を用いた超高速非線形分光" 応用物理. 58. 1453-1462 (1989)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H. Nakatsuka: "Persistent Photochemical Hole Burning and Subpicosecond Photon Echoes by Using Diode Laser" Japanese Journal of Applied Physics,Supplement. 28ー3. 261-263 (1989)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H. Nakatsuka: "Observation of Time Evolution of Photochemical Holes in an Organic Amorphous System by Using a Diode Laser" Chemical Physics Letters. 171. 245-248 (1990)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] R. Yano: "Superluminescent Diode Excitation of Femtosecond Accumulated Photon Echoes" Journal of the Optcal Society of America B.

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] S. Uemura: "Dynamics of Persistent Hole Burning in Organic Glasses and its Fractal Interpretation" Physical Review B.

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] R. Yano, Y. Matsumoto, T, Tani and H. Nakatsuka,: "Ultrafast Dephasing and Incoherent Light Photon Echoes in Organic Amorphous Systems" J. Phys. Soc Jpn.,. Vol. 58, No. 10. 3814-3821 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H. Nakatsuka, K. Inouye, S. Uemura, T. Mishina and R. Yano,: "Persistent Photochemical Hole Burning and Subpicosecond Photon Echoes by using Diode Laser" Jpn. J. Appl. Phys.,. Vol. 28, suppl. 28-3,. 261-263 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H. Nakatsuka, Y. Katahima and K. Inouye,: "Fluorescence Lifetime Measurement of Semiconductor Doped Glass by using an Incoherent Light Gated Optical Kerr Shutter" Opt. Commun.,. Vol. 74, No. 3, 4,. 219-222 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H. Nakatsuka, K. Inouye, S. Uemura and R. Yano,: "Observation of the Time Evoluion of Persistent Holes in an Organic Amorphous System using a Diode Laser" Chem. Phys. Lett.,. Vol. 171, No. 3,. 245-248 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H. Nakatsuka, K. M. Abedin and S. Uemura,: "Active Mode-Locking of Conventional Diode Laser by using External Cavity" Opt. Commun.,. Vol. 78, No. 5, 6,. 369-372 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H. Nakatsuka, D. Masuoka and T. Yamamoto,: "Optical Phase Conjugation in Cooled Organic Dye Film" Opt. Commun.,. Vol. 80, No. 3, 4,. 215-218 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] R. Yano, S. Uemura, H. Nakatsuka and M. Okada,: "Superluminescent Diode Excitation of Femtosecond Accumulated Photon Echoes" J. Opt. Soc. Am. B,.

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H. Nakatsuka, D. Masuoka, Y. Yamamoto, S. Uemura and R. Yano: "Optical Phase Conjugation using a Diode Laser in a Cooled Organic Dye Film" Nonl. Opt.,.

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] S. Uemura, H. Nakatsuka, K. M. Abedin and M. Okada,: "Dynamics of Persistent Hole Burning in Organic Glasses and its Fractal Interpretation" Phys. Rev. B,.

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1993-08-12  

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