应用光学, 2008, 29 (5): 0772, 网络出版: 2010-06-13
半外腔微片Nd∶YAG正交偏振激光器及其在精密测角中的应用
Semi-external cavity Nd ∶YAG microchip laser with orthogonal linear polarized dual-frequency output and its application in precision angle measurement
摘要
设计了一种半外腔微片Nd∶YAG正交偏振双频激光器。把2个1/4波片置于激光谐振腔内,一个静止,一个作360°旋转,旋转引起2个1/4波片快轴之间的角度变化被激光器转化成激光2个频率之差的变化,从而输出可调谐的双频激光。采用琼斯矩阵对光在腔内的本征模进行分析,给出了双频频差的理论解释。讨论了一种体积小、分辨率高和可整周测量的新型Nd∶YAG激光测角仪的潜在前景。
Abstract
The Nd ∶YAG microchip laser with orthogonal linear polarized dual-frequency output was designed. Two quarter-wave plates in which one is static,another rotates around in 360°,are set in the laser cavity. The intra-cavity variable birefringence caused by relative rotation of two wave plates in laser cavity results in changeable frequency difference of dual frequency. Thus,the output of the tunable dual-frequency laser is realized. The eigen-mode of laser in the cavity was analyzed with Jones matrix. The theoretical description for the frequency diversity of dual-frequency is presented. The potential laser gomometer with small volume,high resolution and ability of precision 360°measurement is discussed.
任成, 谈宜东, 张书练. 半外腔微片Nd∶YAG正交偏振激光器及其在精密测角中的应用[J]. 应用光学, 2008, 29(5): 0772. REN Cheng, TAN Yi-dong, ZHANG Shu-lian. Semi-external cavity Nd ∶YAG microchip laser with orthogonal linear polarized dual-frequency output and its application in precision angle measurement[J]. Journal of Applied Optics, 2008, 29(5): 0772.