公开(公告)号：US20110116519A1

公开(公告)日：2011-05-19

申请号：US12720162

申请日：2010-03-09

申请人： Lung-Han Peng ,  Chih-Ming Lai ,  I-Ning Hu ,  Ying-Yao Lai ,  Chu-Hsuan Haung

发明人： Lung-Han Peng ,  Chih-Ming Lai ,  I-Ning Hu ,  Ying-Yao Lai ,  Chu-Hsuan Haung

IPC分类号： H01S3/10

CPC分类号： H01S3/1083 ,  G02F1/3532 ,  G02F1/39 ,  G02F2001/3546 ,  G02F2001/3548

摘要： Provided are an apparatus and a method for converting laser energy, characterized by employing an optical parametric oscillator for converting light of a green laser wavelength into light of a blue or red laser wavelength via a phase matching structure, by means of a non-linear optical crystal having a one-dimensional quasi-phase matching structure with a single grating period under appropriately-controlled temperature conditions. The non-linear optical crystal with the single grating period facilitates optical parametric oscillation and second harmonic generation to thereby enable green-to-blue wavelength conversion with a slope efficiency greater than 20%. Under 400 mW green light pump laser action, a periodically poled LiTaO3 crystal with a crystal length of 15 mm and without a resistant reflective plating film on its end face is capable of outputting a blue light laser beam of 56 mW.

摘要翻译： 提供了一种用于转换激光能量的装置和方法，其特征在于采用光学参量振荡器，通过相位匹配结构，通过非线性光学器件将绿色激光波长的光转换成蓝色或红色激光波长的光 晶体具有在适当控制的温度条件下具有单个光栅周期的一维准相位匹配结构。 具有单光栅周期的非线性光学晶体便于光参量振荡和二次谐波产生，从而使得斜率效率大于20％的绿 - 蓝波长转换成为可能。 在400mW绿光泵浦激光作用下，晶体长度为15mm的周期极化的LiTaO3晶体在其端面上没有耐反射镀膜，能够输出56mW的蓝光激光束。