SHG devices for high power YAG lasers.

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  • IMAI Shinichi
    Optical Research Center, Manufacturing Engineering Research Center, Toshiba Corporation
  • KAZUTA Koji
    R&D Planning Dept., Engineering R&D Administration, Tokyo Electric Power Company

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  • １０Ｗ級ＳＨＧ‐ＹＡＧレーザー用素子
  • 10Wキュウ SHG YAG レーザーヨウ ソシ

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Abstract

We investigated nonlinear crystals for the second harmonic generation of Nd: YAG laser radiation. KTP and LBO devices were used to generate the secondharmonic light of CW pumped Q-switched Nd: YAG laser radiation. We compared 6kinds of devices. To obtain the second-harmonic-output power as high as 10W, we found that a hydro-thermal-grown KTP device oper-ated at elevated temperature and a flux-grown LBO device operated in noncritical phase match-ing give rise to reliable operation.

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