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Development of tunable all solod-state UV laser

Research Project

Project/Area Number 07555015
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section試験
Research Field Applied optics/Quantum optical engineering
Research InstitutionOsaka University

Principal Investigator

SASAKI Takatomo  Osaka Univ., Electrical Eng., Professor, 工学部, 教授 (50029237)

Co-Investigator(Kenkyū-buntansha) OKAMOTO Yoshiaki  Okamoto Kogaku-kakosyo, Manager, 専務取締役研究者
MORI Yusuke  Osaka Univ., Electrical Eng., Res.Associate, 工学部, 助手 (90252618)
YOSHIDA Kunio  Osaka Institute of Tech., Electrical Eng., Professor, 工学部, 教授 (70029338)
Project Period (FY) 1995 – 1996
Project Status Completed (Fiscal Year 1996)
Budget Amount *help
¥10,400,000 (Direct Cost: ¥10,400,000)
Fiscal Year 1996: ¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1995: ¥8,300,000 (Direct Cost: ¥8,300,000)
KeywordsTunable / UV laser / All solid-state / LBO / Intracavity / Frequency conversion / 波長変換 / 紫外レーザー光 / 全固体化 / CsLiB_6O_<10> / LiB_3O_5 / 第二高調波発生 / チタンサファイアレーザー
Research Abstract

・Simple and high-efficiency cw Ti : sapphire LBO-intracavity SHG cavity was successfully developed.
・Infrared-to-UV conversion efficiency over 70% was realized. To the best of our knowledge, this is the highest SHG efficiency with cw Ti : sapphire laser ever reported.
・Stable and wavelength-tunable UV radiation was obtained with the maximum power of 740 mW.Wavelength-tuning range was from 400 nm to 395 nm and is possibly extended by using different cut LBO crystals. The UV output pattern was close to circular and spatial-intensity distribution was smooth, and therefore suited for application. The issue of intracavity-SHG instability was overcome by large mode number pumping laser.
・Enhancement factors of conversion efficiency were theoretically analyzed. Calculated UV powers were in good agreement with the measured ones.
・In addition to LBO,BBO and CLBO crystals were utilized and compared. From the view points of conversion efficiency, output pattern and tuning characteristic, LBO crystal is realized to be most favorable for this application. However,
・Laser-induced damages on LBO AR-coatings were observed as the laser operated at higher power level.

Report

(3 results)
  • 1996 Annual Research Report   Final Research Report Summary
  • 1995 Annual Research Report
  • Research Products

    (14 results)

All Other

All Publications (14 results)

  • [Publications] Yusuke Mori: "High efficiency intracavity cw UV generation using crystals CLBO, BBO and LBO" Optics Commnnications. 123. 583-586 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Yusuke Mori: "Intracavity trequency doubling of a cw ti : sapphire laser with over 70% efficiency" Applied Physics Letters. 66. 2463-2465 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Yusuke Mori: "High-efficiency intracavity frequency doubled CW and tunable ti : sapphire lasers" Japanese Journal of Applied Physics. 34. 3518-3521 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] W.-L.Zhou, Y.Mori, T.Sasaki and S.Nakai: "High-efficiency intracavity continuous-wave ultraviolet generation using crystals CsLiB_6O_<10>, beta-BaB_2O_4 and LiB_3O_5" Opt.Commu.Vol.123. 583-586 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] W.-L.Zhou, Y.Mori, T.Sasaki, S.Nakai, K.Nakano, S.Niikura, and B.Craig: "Intracavity frequency doubling of a cw Ti : sapphire laser with over 70% conversion efficiency" Appl.Phys.Lett.Vol.66. 2463-2465 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] W.-L.Zhou, Y.Mori, T.Sasaki, S.Nakai, K.Nakano, and S.Niikura: "High-Efficiency Intracavity Frequency Doubled CW and Tunable Ti : sapphire Laser" Jpn.J.Appl.Phys.Vol.34. 3518-3521 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Yusuke Mori: "High effictency intracarity CW UV geheration using erystals CLBO,BBO and LBO" Optics-Communications. 123. 583-586 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Yusuke Mori: "Intracarity tregnency donbling of a CW Ti:sapphire laser with over 70% ettlictency" Applied Physics Letters. 66. 2463-2465 (1995)

    • Related Report
      1996 Annual Research Report
  • [Publications] Yusuke Mori: "Higy-efficiency intracarity Freguency bubled CW and Tumble Ti:sapplire lasers" Japanese Jonrnal of Applied Physics. 34. 3518-3521 (1995)

    • Related Report
      1996 Annual Research Report
  • [Publications] W.L.Zhou: "Intracavity Frequency Doubling of a cw Ti:sapphire Laser with Over 70% Conversion Efficiency" Appl.Phys.Lett.66. 2463-2465 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] W.L.Zhou: "Single-Longitudinal-MOde Operation and Lager Energy Diffusion due to Interacavity SHG in a Nd:YVO_4 Microchip Laser" Jpn.J.Appl.Phys.33. L779-782 (1994)

    • Related Report
      1995 Annual Research Report
  • [Publications] Y.Mori: "New Nonlinear Optical Crystal:CsLiB_6O_<10>" Appl.Phys.Lett.67. 1818-1820 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] Y.Mori: "Nonlinear Optical Properties ofCLBO" Jpn.J.Appl.Phys.34. L296-298 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] Y.Mori: "Growth of Nonlinear Optical properties:Cesium Lithum Borate" J.Cryst.Growth. 156. 307-309 (1995)

    • Related Report
      1995 Annual Research Report

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Published: 1995-04-01   Modified: 2016-04-21  

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