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1999 Fiscal Year Final Research Report Summary

Development of Cavity-Dumped Ti : sapphire Femtosecond Laser and its Amplifier

Research Project

Project/Area Number 10554034
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section展開研究
Research Field Physical chemistry
Research InstitutionKobe University

Principal Investigator

TOMINAGA Keisuke  Kobe University, Faculty of Science, Associate Professor, 理学部, 助教授 (30202203)

Co-Investigator(Kenkyū-buntansha) KASAHARA Shunji  Kobe University, Faculty of Science, Research Associate, 理学部, 助手 (00260646)
NIIKURA Shinji  Spectra-Physics K-K., Laser Product Division, Technical Support Manager, フィジックス社株式会社・レーザープロダクト事業部, テクニカルサポート・マネージャー
SARUKURA Nobuhiko  Okazaki Research Institute, Institute for Molecular Science, Associate Professor, 分子科学研究所, 助教授 (40260202)
Project Period (FY) 1998 – 1999
KeywordsTi : sapphire laser / femtosecond laser / cavity-dumper / multi-pass amplifire / ultrafast spectroscopy
Research Abstract

We have developed an intra-cavity dumped femtosecond Ti : sapphire laser system and its multi-pass amplifier to obtain a moderately high energy short pulse, enough to perform third order optical nonlinear experiment in liquid solutions. Currently, commercially available femtosecond Ti : sapphire laser systems are either (1)Ti : sapphire oscillator (general price = 18,000,000 yen), which yields a pulse with an energy of 4 nJ/pulse, or (2)Ti : sapphire oscillator and its amplifier (general price = 50,000,000 yen), which yields a pulse with an energy of 1 mJ/pulse. In order to perform experiment with a short pulse in chemical systems such as transient absorption or photon echo, we need a pulse with an energy around mJ/pulse to sub mJ/pulse. Therefore, a new short pulse laser system is desirable to get s moderately high energy pulse. In this research project we here calculated stability of oscillation for the cavity-dumped Ti : sapphire laser by the ABCD matrix formalism. We have investigated both the five-mirror configuration and six-mirror configuration theoretically and experimentally. The cavity dumper laser produces a pulse width of 13 fs and energy of 67 nJ/pulse at 4 MHz. Currently, a multi-pass (six-pass) amplifier with a Ti : sapphire crystal is being designed and constructed to get a higher energy pulse. The purpose of this amplifier is to get a pulse with an energy more than sub microJ/pulse at 20 kHz. We are also writing a manual to construct this laser system and are planning to distribute it to public.

  • Research Products

    (20 results)

All Other

All Publications (20 results)

  • [Publications] K. Ohta: ""Femtosecond Transient Absorption Studies of trans- and cis-1,3,5-Hexiatriene in Solution""J. Phys. Chem. A. 102. 35-44 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T.J. Kang: ""Femtosecond Relaxation of Higher Electronic Excited State of Coumarin in Solution""Chem. Phys. Lett.. 287. 29-34 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H. Shirota: ""Substituent Effect and Deuterium Isotope Effect of Ultrafast Intermolecular Electron Transfer : Coumarin in Electron Donating Solvent""J. Phys. Chem. A. 102. 3089-3102 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K. Tominaga: ""Overtone Vibration Dephasing of Chloroform Studied b Higher-Order Nonlinear Spectroscopy""J. Phys. Chem. A. 102. 4222-4228 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H. Shirota: ""Ultrafast Intermolecular Electron Transfer in Coumarin-Hydrazine System""Chem. Phys.. 236. 355-364 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K. Tominaga: ""Recent Development of Nonlinear Spectroscopy in Liquids""Laser Chem.. 19. 117-122 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Ohta, Y.Naitoh, K.Tominaga, N.Hirota, and K.Yoshihara: "Femtosecond Transient Absorption Studies of trans- and cis-1, 3, 5-Hexiatriene in Solution"J. Phys. Chem. A. 102(No.1). 35-44 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.J.Kang, K.Ohta, K.Tominaga, and K.Yoshihara: "Femtosecond Relaxation of Higher Electronic Excited State of Coumarin in Solution"Chem. Phys. Lett.. 287(No.1/2). 29-34 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H.Shirota, H.Pal, K.Tominaga, and K.Yoshihara: "Substituent Effect and Deuterium Isotope Effect of Ultrafast Intermolecular Electron Transfer : Coumarin in Electron Donating Solvent"J. Phys. Chem. A. 102(No.18). 3089-3102 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Tominaga and K.Yoshihara: "Overtone Vibrational Dephasing of Chloroform Studied by Higher-Order Nonlinear Spectroscopy"J. Phys. Chem. A. 102(No.23). 4222-4228 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H.Shirota, H.Pal, K.Tominaga, and K.Yoshihara: "Ultrafast Intermolecular Electron Transfer in Coumarin-Hydrazine System"Chem. Phys.. 236. 355-364 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Tominaga: "Recent Development of Nonlinear Spectroscopy in Liquids"Laser Chem.. 19. 117-122 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Ohta, Y.Naitoh, K.Tominaga, N.Hirota, and K.Yoshihara: "Femtosecond Transient Absorption Studies of Simple Polyenes in Solution"Laser Chem.. 19. 371-374 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Ohta, T.J.Kang, K.Tominaga, and K.Yoshihara: "Femtosecond Time-resolved Fluorescence Studies of a Dye Molecule in Solution : Ultrafast Processes from a Higher Excited Electronic State"Chem. Phys.. 242. 103-114 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H.Pal, H.Shirota, K.Tominaga, and K.Yoshihara: "Ultrafast Intermolecular Electron Transfer from Orthomethoxyaniline to Excited Coumarin Dyes"J. Chem. Phys.. 110. 11454-11465 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Tominaga and H.Maekawa: "Stochastic-Liouville Approach to Optically-Induced Electron Transfer ; Electronic Coherence in the Reaction Dynamics (invited article)"J. Raman Spectroscopy, a special issue on "Femtosecond Coherent Raman Spectroscopy". 31. 137-144 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Tominaga and H.Maekawa: "Electron Transfer Dynamics in the Excited State Studied by Stochastic-Liouville Equation"J. Mol. Liq.. (in press.).

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Tominaga and H.Maekawa: "Development of Two-Dimensional Raman Spectroscopy by Higher-Order Optical Nonlinear Spectroscopy"J. Luminescence. (in press.).

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Tominaga and K.Yoshihara: "Concentration Dependence of the Fifth-Order Two-Dimensional Raman Signal"J. Chinese Chem. Soc.. (in press.).

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Tominaga and H.Maekawa: "Recent Development of Optical Two-Dimensional Spectroscopy in Liquids"Proceedings of Two-Dimensional Correlation Spectroscopy, ed. by I. Noda and Y. Ozaki. (in press.).

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

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Published: 2001-10-23  

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