发明申请
US20090080475A1 WAVELENGTH CONVERSION OPTICAL ELEMENT, METHOD FOR FABRICATING WAVELENGTH CONVERSION OPTICAL ELEMENT, WAVELENGTH CONVERSION DEVICE, ULTRAVIOLET LASER IRRADIATOR AND LASER MATERIAL PROCESSING SYSTEM
有权
波长转换光学元件，用于制造波长转换光学元件，波长转换器件，超紫外线激光辐射器和激光材料加工系统的方法
- 专利标题： WAVELENGTH CONVERSION OPTICAL ELEMENT, METHOD FOR FABRICATING WAVELENGTH CONVERSION OPTICAL ELEMENT, WAVELENGTH CONVERSION DEVICE, ULTRAVIOLET LASER IRRADIATOR AND LASER MATERIAL PROCESSING SYSTEM
- 专利标题（中）： 波长转换光学元件，用于制造波长转换光学元件，波长转换器件，超紫外线激光辐射器和激光材料加工系统的方法
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申请号： US12233174申请日： 2008-09-18
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公开(公告)号： US20090080475A1公开(公告)日： 2009-03-26
- 发明人: Masashi YOSHIMURA , Takatomo Sasaki , Yusuke Mori , Muneyuki Nishioka , Tomotaka Katsura , Tetsuo Kojima , Junichi Nishimae
- 申请人： Masashi YOSHIMURA , Takatomo Sasaki , Yusuke Mori , Muneyuki Nishioka , Tomotaka Katsura , Tetsuo Kojima , Junichi Nishimae
- 申请人地址： JP Suita-shi JP Chiyoda-ku
- 专利权人： Osaka University,MITSUBISHI ELECTRIC CORPORATION
- 当前专利权人： Osaka University,MITSUBISHI ELECTRIC CORPORATION
- 当前专利权人地址： JP Suita-shi JP Chiyoda-ku
- 优先权： JP2006-075753 20060318
- 主分类号： H01S3/10
- IPC分类号： H01S3/10 ; G02F1/35 ; C01B35/10
摘要：
An optical wavelength conversion element includes a cesium-lithium-borate crystal processed into a 10-mm long optical element cut in an orientation that allows a fourth harmonic of a Nd:YAG laser to be generated. A transmittance (Ta) at 3589 cm−1 in an infrared transmission spectrum of the optical element is used as an index that indicates a content of water impurities in the crystal and is independent of a polarization direction. An actual measurement of the transmittance Ta is at least 1%, without taking into account loss at an optically polished surface of the crystal. A wavelength conversion device, a ultraviolet laser irradiation apparatus, a laser processing system, and a method of manufacturing an optical wavelength conversion element are also described.
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