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Generation of Coherent Radiation in Soft X-Ray Region

Research Project

Project/Area Number 60550032
Research Category

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

Allocation TypeSingle-year Grants
Research Field 応用物理学一般(含航海学)
Research InstitutionInstitute of Laser Engineering, Osaka University

Principal Investigator

KATO Yoshiaki  Institute of Laser Engineering, Osaka University, 国立大学(その他), 教授 (30093397)

Co-Investigator(Kenkyū-buntansha) MIYANAGA Noriaki  Institute of Laser Engineering Osaka University, レーザー核融合研究センター, 助手 (80135756)
YABE Takashi  Institute of Laser Engineering, Osaka University, レーザー核融合研究センター, 助教授 (60016665)
YAMASHITA Kojun  Department of Physics, Osaka University, 理学部, 助教授 (80022622)
Project Period (FY) 1985 – 1986
Project Status Completed (Fiscal Year 1986)
Budget Amount *help
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1986: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1985: ¥1,400,000 (Direct Cost: ¥1,400,000)
KeywordsX-ray laser / Laser-produced plasma / Coherent X-ray / Multilayer X-ray mirror / 内穀励起
Research Abstract

We have investigated on the three subjects related to the present project and obtained the following results.
1) XUV laser oscillation by amplified spontaneous emission was tested by using a high power glass laser as the pumping source. Thin plastic films with thin aluminum coatings were used as the target. We have succeeded in observing amplification and determining the gain coefficients on the following transitions.
<C^(5+)> 3d -> 2p(182.2 <ang> )g = 1.5 <cm^(-1)> ; <0^(7+)> 3d -> 2p(102.4 <ang> )g = 3.3 <cm^(-1)>
<Al^(10+)> 5f -> 3d(105.7 <ang> )g = 1.1 <cm^(-1)> ; <Al^(10+)> 5d -> 3p(103.8 <ang> )g = 0.9 <cm^(-1)>
2) Reflection characteristics of <M_oS_i> multilayer coating were measured with synchrotron radiation at UVSOR. Reflectivity of 55% was obtained and wavelength dependence of the effective coating thickness was determined.
3) Generation mechanism of M-band emission in 2-4keV region from laser-heated gold plasma has been clarified.

Report

(1 results)
  • 1986 Final Research Report Summary
  • Research Products

    (13 results)

All Other

All Publications (13 results)

  • [Publications] Y.Kato: Proceedings of SPIE. 664. 151-160 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] K.Yoshida: Applied Physics Letters. 47. 911-913 (1985)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] T.Kanabe: Optics Communications. 58. 206-210 (1985)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Y.Uehara: Optics Letters. 10. 487-489 (1985)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Y.Kitagawa: Japanese Journal of Applied Physics. 25. 586-589 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Y.Kitagawa: Physical Review Letters. 56. 2804-2806 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] 山中千代衛編: "レーザーと未来社会" 三田出版会, 280 (1985)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Y. Kato: "Efficient generation of x-ray radiation in laser-produced plasmas" Proceedings of SPIE. 664. 151-160 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] K. Yoshida: "Highly damage resistant broadband, hard antireflection coating for high power lasers in the ultraviolet to near-infrared wavelength regions." Applied Physics Letters. 47. 911-913 (1985)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] T. Kanabe: "Coherent stacking of frequency chirped pulses for stable generation of controlled pulse shapes" Optics Communications. 58. 206-210 (1985)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Y. Uehara: "Tunable oscillation of a high-power argon excimer laser in the vacuum ultraviolet spectral region" Optics Letters. 10. 487-489 (1985)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Y. Kitagawa: "Enhancement of long-scale magnetic fields in spatially random-phased laser illumination" Physical Review Letters. 56. 2804-2806 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] C. Yamanaka: Mita Publishing Co.Laser and Future World, 280 (1985)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary

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

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