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Studies on New Spectrometric Light Source -Rainbow Stars-

Research Project

Project/Area Number 01850171
Research Category

Grant-in-Aid for Developmental Scientific Research

Allocation TypeSingle-year Grants
Research Field 工業分析化学
Research InstitutionKyushu University

Principal Investigator

IMASAKA Totaro  Kyushu University Faculty of Engineering Professor, 工学部, 教授 (30127980)

Co-Investigator(Kenkyū-buntansha) YOSHIDA Tamio  Shimadzu Co. Technology Research Center Researcher, 技術研究本部, 主任研究員
ISHIBASHI Nobuhiko  Kyushu University Faculty of Engineering Emeritus Professor, 工学部, 名誉教授 (00037673)
Project Period (FY) 1989 – 1991
Project Status Completed (Fiscal Year 1991)
Budget Amount *help
¥16,400,000 (Direct Cost: ¥16,400,000)
Fiscal Year 1991: ¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 1990: ¥5,500,000 (Direct Cost: ¥5,500,000)
Fiscal Year 1989: ¥9,400,000 (Direct Cost: ¥9,400,000)
KeywordsRainbow Stars / Widely-Tunable Laser / Multi-Color Laser / Four-Wave Mixing / Stimulated Raman Effect / Spectroscopic Analysis / Fydrogen / Ultrashort Laser Pulse / 色素レ-ザ- / 光源
Research Abstract

Two-color stimulated Raman emission was generated by introduction of a two-color laser beam into pressurized hydrogen, in order to obtain widely-tunable laser emission. The laser wavelength could be changed from 247 to 771 nm. However, it was technically difficult to simultaneously scan both the laser wavelengths. Then, a few numbers of rotational stimulated Raman lines were first generated by introduction of a circularly-polarized, single-color laser beam. Succeedingly, the polarization was changed to a linear, and many rotational and vibrational lines were generated by the two-color stimulated Raman effect. This technique allows a wavelength scan and is useful for analytical spectroscopy. It was also possible to generate either vibrational or rotational lines selectively by optimizing the polarization of the beam. the pressure of hydrogen, and the beam focusing condition. Alternatively. the separation of the rotational lines could be changed from 587 to 354 cm^<-1> by replacing ortho … More -hydrogen with para-hydrogen. This approach is useful to increase the density of the rotational lines in the specified spectral region.
Equally-spaced, multi-frequency laser emission can, be generated by two-color stimulated Raman emission. As is known from Uncertainty principle, ultrashort light pulses can be generated by the laser with wide frequency components. Then, the presented approach might give a break-through in generation of ultrashort pulses. Theoretical and preliminary experimental works were performed in this study. By a theoretical calculation, a laser pulse with several fs could be generated, when the laser beam was Fourier-transform limited and was modelocked. Several optical configurations for generation of ultrashort pulses were proposed, e. g. a quenching laser/short-cavity laser/distributed feedback laser/exciter laser amplification/two-color stimulated Raman emission. - In our preliminary study, a 2-ns laser pulse was generated by quenching the long tail of the dye laser pulse. It was verified that a high-power, sh(Yrt-pulse laser is useful for efficient generation of two-color stimulated Raman emission. The multi-pass Raman cell developed in our laboratory was useful for reduction of threshold and improvement of the efficiency.
Two-color stimulated Raman emission was used as a light source for excitation of the sample in a condensed phase and in a supersonic jet. Thus it was verified to be useful for measurement of the sample in analytical spectroscopy. Less

Report

(4 results)
  • 1991 Annual Research Report   Final Research Report Summary
  • 1990 Annual Research Report
  • 1989 Annual Research Report
  • Research Products

    (33 results)

All Other

All Publications (33 results)

  • [Publications] Totaro Imasaka: "Generation of More Than 40 Laser Emission Lines from the Ultraviolet to the Visible Regions by Two-Color Stimulated Raman Effect" Applied Physics B. 49. 389-392 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Totaro Imasaka: "Continuously Tunable Laser Emission from the Deep-Ultraviolet to the Near-Infrared Generated by Single Optical System" Applied Optics. 29. 1727-1729 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Toshiyuki Higashijima: "Development of Widely-Tunable and Multi-Color Laser and Its Application to Analytical Spectroscopy" Analytical Sciences. 6. 765-767 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Shuichi Kawasaki: "Efficiently Generated Rotational and Vibrational Stimulated Raman Emission by Means of a Two-Color Laser Beam" Applied Physics B. 52. 211-216 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Shigetaka Yoshikawa: "Equally-Spaced Multi-Frequency Laser Emission Generated By Two-Color Stimulated Raman Effect.-Enhancement of Rotational Lines and Suppression of Vibrational Lines-" Japanese Journal of Applied Physics,Letter. 30. 283-285 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Shuichi Kawasaki: "Two-Color Stimulated Raman Effect of Para-Hydrogen" Journal of Optical Society of America B. 8. 1461-1463 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Shigetaka Yoshikawa: "Generation of ultrashort Pulses by Two-Color Stimulated Raman Effect" Proceeding of ICAS Kyushu Post Conference. 5-6 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Totaro Imasaka: "Analytical Techniques Using Lasers" Progress in Quantum Electronics. 14. 131-249 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 今坂 藤太郎: "レインボ-スタ-ズー二色誘導ラマン効果ー" 分光研究. 40. 291-292 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 今坂 藤太郎: "新しい分光分析用光源ーRainbow Starsーの研究" 学術月報.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Totaro Imasaka: "Generation of More Than 40 Laser Emission Lines from the Ultraviolet to the Visible Regions by Two-Color Stimulated Raman Effect" Applied Physics B. 49. 389-392 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Totaro Imasaka: "Continuously Tunable Laser Emission from the Deep-Ultraviolet to the Near-Infrared Generated by Single Optical System" Applied Optics. 29. 1727-1729 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Toshiyuki Higashijima: "Development of Widely-Tunable and Multi-Color Laser and Its Application to Analytical Spectroscopy" Analytical Sciences. 6. 765-767 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Shuichi Kawasaki: "Efficiently Generated Rotational and Vibrational Stimulated Raman Emission by Means of A Two-Color Laser Beam" Applied Physics B. 52. 211-216 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Shigetaka Yoshikawa: "Equally-Spaced Multi-Frequency Laser Emission Generated by Two-Color Stimulated Raman Effect. -Enhancement of Rotational Lines and Suppression of Vibrational Lines-" Japanese Journal of Applied Physics, Letter. 30. 283-285 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Shuichi Kawasaki: "Two-Color Stimulated Raman Effect of Para-Hydrogen" Journal of Optical Society of America B. 8. 1461-1463 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Shigetaka Yoshikawa: "Generation of Ultrashort Pulses by Two-Color Stimulated Raman Effect" Proceeding of ICAS Kyushu Post Conference. 5-6 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Totato Imasaka: "Analytical Techniques Using Lasers" Progress in Quantum Electronics. 14. 131-249 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Totaro Imasaka: "Rainbow Stars-Two-Color Stimulated Raman Effect" Journal of the Spectroscopical Society of Japan. 40. 291-292 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Totaro Imasaka: "Studies on New Light Source for Spectrometry -Rainbow Stars-" Gakujutsu Geppou.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Shuichi Kawasaki: "Two-Color Stimulated Raman Effect of para-Hydrogen" Journal of Optical Society of America B. 8. 1461-1463 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Shigetaka Yoshikawa: "Generation of Ultrashort Pulses by Two-Color Stimulated Raman Effect" Proceeding of ICAS Kyushu Post Conference. 5-6 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 今坂 藤太郎: "レインボ-スタ-ズ-二色誘導ラマン効果-" 分光研究. 40. 291-292 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 今坂 藤太郎: "新しい分光分析用光源-Rainbow Stars-の研究" 学術月報.

    • Related Report
      1991 Annual Research Report
  • [Publications] Totaro Imasaka: "Continuously Tunable Laser Emission from the DeepーUltraviolet to the NearーInfrared Generated by Single Optical System" Applied Optics. 29. 1727-1729 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] Toshiyuki Higashijima: "Development of WidelyーTunable and MultiーColor Laser and Its Application to Analytical Spectroscopy" Analytical Sciences. 6. 765-767 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] Shuichi Kawasaki: "Efficiently Generated Rotational and Vibrational Stimulated Raman Emission by Introduction of TwoーColor Laser Beam" Applied Physics B.

    • Related Report
      1990 Annual Research Report
  • [Publications] Shigetaka Yoshikawa: "EquallyーSpaced MultiーFrequency Laser Emission Generated by TwoーColor Stimulated Raman Effect.ーEnhancement of Rotational Lines and Suppression of Vibrational Linesー" Japanese Journal of Applied Physics.

    • Related Report
      1990 Annual Research Report
  • [Publications] Shuichi Kawasaki: "TwoーColor Stimulated Raman Effect of ParaーHydrogen" Journal of American Optical Society.

    • Related Report
      1990 Annual Research Report
  • [Publications] Totaro Imasaka: "Generation of More Than 40 Laser Emission Lines from the Ultraviolet to the Visible Regions by Two-Color Stimulated Raman Effect" Applied Physics B. 49. 389-392 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] Totaro Imasaka: "Continuously Tunable Laser Emission from the Deep-Ultraviolet to the Near-Infrared Generated by Single Optical System" Applied Optics.

    • Related Report
      1989 Annual Research Report
  • [Publications] Toshiyuki Higashijima: "Widely Tunable Laser Source for Spectrometry" Analytical Sciences.

    • Related Report
      1989 Annual Research Report
  • [Publications] Shuichi Kawasaki: "Efficiently Generated Rotational and Vibrational Stimulated Raman Emission by Introduction of Two-Color Laser Beam" Journal of Chemical Physics.

    • Related Report
      1989 Annual Research Report

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Published: 1989-04-01   Modified: 2019-02-15  

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