发明授权
- 专利标题: Optical wavelength conversion method, optical wavelength conversion system, program and medium, and laser oscillation system
- 专利标题(中): 光波长转换法,光波长转换系统,程序与介质,激光振荡系统
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申请号: US10477753申请日: 2002-05-23
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公开(公告)号: US07227680B2公开(公告)日: 2007-06-05
- 发明人: Ichiro Sekine , Hiroyuki Shiraishi , Hirokazu Kato , Genta Masada , Noriko Watanabe
- 申请人: Ichiro Sekine , Hiroyuki Shiraishi , Hirokazu Kato , Genta Masada , Noriko Watanabe
- 申请人地址: JP Tokyo
- 专利权人: Mitsubishi Materials Corporation
- 当前专利权人: Mitsubishi Materials Corporation
- 当前专利权人地址: JP Tokyo
- 代理机构: Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
- 优先权: JP2001-157289 20010525; JP2001-160946 20010529; JP2001-160948 20010529; JP2001-276640 20010912; JP2001-389862 20011221
- 国际申请: PCT/JP02/05005 WO 20020523
- 国际公布: WO02/097527 WO 20021205
- 主分类号: G02F1/35
- IPC分类号: G02F1/35
摘要:
In an optical wavelength converting method in which light from a laser oscillator that oscillates coherent light of an inherent wavelength λ is employed as incident light, and is made to input to a nonlinear optical crystal, and light having a wavelength of ½λ is radiated, the wavelength of the incident light is 1000 nm or less, and the peak power density of the incident light is 0.1–10 fold greater than the peak power density that provides the maximum conversion efficiency. The nonlinear optical crystal is heated to and maintained at 200–600° C. Prescribed fundamental waves are input to a first crystal and a second crystal sequentially. The first crystal has a higher bulk damage threshold value with respect to the fundamental waves than that of the second crystal. The second crystal has a higher effective nonlinear constant with respect to the fundamental waves than that of the first crystal.