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Development of a new method of twe-photon absorption measurement and study of electronic structure of polydiacetylene crystals

Research Project

Project/Area Number 61460024
Research Category

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

Allocation TypeSingle-year Grants
Research Field 固体物性
Research InstitutionHokkaido University

Principal Investigator

INOUE Kuon  Hokkaido Univ., Res.Inst.Appl.Elect., Professor, 応用電気研究所, 教授 (30021934)

Co-Investigator(Kenkyū-buntansha) YAMANAKA Akio  Hokkaido Univ., Res.Inst.Appl.Elect., Research Associate, 応用電気研究所, 助手 (30182570)
ASAKA Shuji  Hokkaido Univ., Res.Inst.Appl.Elect., Research Associate, 応用電気研究所, 助手 (00167876)
SHINDO Yoshio  Hokkaido Univ., Res.Inst.Appl.Elect., Associate Professor, 応用電気研究所, 助教授 (10001702)
Project Period (FY) 1986 – 1988
Project Status Completed (Fiscal Year 1989)
Budget Amount *help
¥7,000,000 (Direct Cost: ¥7,000,000)
Fiscal Year 1988: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1987: ¥1,400,000 (Direct Cost: ¥1,400,000)
Fiscal Year 1986: ¥4,900,000 (Direct Cost: ¥4,900,000)
KeywordsTwo-photon absorption / Picosecond pump-probe method / Polydiacetylene crystal / Nonlinear laser spectroscopy / quasi-one-dimensional system / レーザー分光 / 高分子固体 / 非線形光学 / 励起子 / 新機能材料
Research Abstract

1. A sensitive and direct method Of two-photon absorption by utilizing two cw mode-locked dye-lasers was developed for spectroscopic use. It is found that the pump and probe method of the picosecond pulses with combined use of a high-frequency lock-in detection works well enough to observe the exciton lines in SnO_2 with the pump power Of 100 W.
2. Feasibility of a similar, highly sensitive method with the use of a cw mode-locked Nd-YAG laser and a dye-laser was also investigated. As the result, the present system was found to be useful enough to determine the nature as well as location of the lowest direct band gap of TiO_2.
3. We studied the two-photon absorption spectrum in a polydiacetylene crystal, TCDU-B to clarify the second-lowest, exciton, if any, of Ag symmetry. The spectrum was interpreted as arising mostly from imperfection, though in some crystals we observed a peak at 2.84 eV due presumably to the exciton.
4. We found that an emission line could be observed in a PTS crystal when two-photon-excited with the energy 2.32 eV. This fact strongly suggests that the Ag exciton might exist.
5. We succeeded in observing the two-photon Raman signal from a PTS crystal under the resonant condition, also supporting the above as well as providing information about ungerade phonons.

Report

(4 results)
  • 1989 Final Research Report Summary
  • 1988 Annual Research Report
  • 1987 Annual Research Report
  • 1986 Annual Research Report
  • Research Products

    (27 results)

All Other

All Publications (27 results)

  • [Publications] Kenji Watanabe: "Two-photon resonant effect of hyper-Raman scattering in the vicinity of the direct forbidden gap in a rutile crystal" Physical Review. B41. No.11 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Kuon Inoue,: "A sensitive and simple two-photon absorption spectroscopy by using cw mode-locked Nd-YAG snd dye lasers" Japanese Journal of Applied Physics(投稿中).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Shuji Asaka: "A sensitive two-photon absorption spectroscopy in solids by two cw mode-locked dye-lasers" Journal of Physics E(投稿中).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Kuon Inoue: "Two-photon excitation study of even-parity exciton in a polydiacetylene crystal" Journal of Physical Society of Japan(発売予定).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Kuon Inoue: "Two-photon Raman scattering by a polydiacetylene crystal" Journal of Molecular and Liquid Crystals(発売予定).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 渡辺賢司: "Experimental Study of Frequency Dispersion of the Hyper-Raman Scattering Efficiency in SrTiO_3" Journal of Physical Society of Japan. 58. 762-732 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 山中明生: "A new spectroscopic system for the measurement of hyper-Raman and Raman signals." Review of Scientific Instruments. 60. 3253-3257 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 渡辺賢司: "Two-photon resonant effect of hyper-Raman scattering in the vicinity of the direct forbidden gap in a rutile crystal." Physical Review B(in press). B41,No.11. (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 渡辺賢司: "Two-photon resonant phenomena of hyper-Raman scattering from the allowed and forbidden phonons in a rutile crystal." Physical Review B(発表予定).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Kenji Watanabe, Kuon Inoue: "Two-photon resonant effect of hyper-Raman Scattering in the vicinity of the direct forbidden gap in a rutile crystal" Physical Review, B41, No.11(1990).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Shuji Asaka, Kenji Watanabe, Kuon Inoue, Fujio Minami: "A sensitive two-photon absorption spectroscopy in solids by using two cw mode-locked dye-lasers" Journal of Physics E.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Kuon Inoue, Yukio Kato, Shuji Asaka, Fujio Minami: "A sensitive and simple two-photon absorption spectroscopy by using cw mode-locked Nd-YAG and dye lasers" Japanese Journal of Applied Physics.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Kuon Inoue, Yukio Kato, Akio Yamanaka: "Two-Photon excitation study of even-parity exciton in a polydiacetylene crystal" Journal of Physical Society of Japan.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Kuon Inoue, Akio Yamanaka, Jun Kawamata: "Two-photon Raman scattering in a polydiacetylene crystal" Journal of Molecular and Liquid Crystals.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 南不二雄: Vltrafast Phenomena VI(edited by T.Yajima,et.al,Springer-Verlag,Berlin). 48. 229-232 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] 井上久遠: Physical Review B(Rapid Communications). 39. 1977-1980 (1989)

    • Related Report
      1988 Annual Research Report
  • [Publications] 山中明生: Journal of Physical Society of Japan.

    • Related Report
      1988 Annual Research Report
  • [Publications] 浅香修治: レーザー研究.

    • Related Report
      1988 Annual Research Report
  • [Publications] 井上久遠: Physical Review B.

    • Related Report
      1988 Annual Research Report
  • [Publications] 浅香修治: Optics Communications.

    • Related Report
      1988 Annual Research Report
  • [Publications] 浅香修治: レーザー研究.

    • Related Report
      1987 Annual Research Report
  • [Publications] 山中明生: Journal of Huysical Society of Japan.

    • Related Report
      1987 Annual Research Report
  • [Publications] 南不二雄: Proceedings of International Conference on Ultra-Fast Phenomena. (1988)

    • Related Report
      1987 Annual Research Report
  • [Publications] 井上久遠: Optics Communication.

    • Related Report
      1987 Annual Research Report
  • [Publications] 淺香修治: Optics Communication.

    • Related Report
      1986 Annual Research Report
  • [Publications] 山中明生: Journal of Physical Society of Japan.

    • Related Report
      1986 Annual Research Report
  • [Publications] 淺香修治: レーザー分光.

    • Related Report
      1986 Annual Research Report

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Published: 1987-03-31   Modified: 2016-04-21  

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