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1. 发明授权

US5091913A Quartz crystal tuning he-ne double frequency laser 失效
标题翻译：石英晶体调谐双频激光器
公开(公告)号：US5091913A
公开(公告)日：1992-02-25
申请号：US507150
申请日：1990-04-10
申请人： Shulian Zhang , Sen Yang , Minxian Wu , Kuofam Jin
发明人： Shulian Zhang , Sen Yang , Minxian Wu , Kuofam Jin
IPC分类号： H01S3/106
CPC分类号： H01S3/106
摘要： A birefringent quartz plate is inserted in the laser cavity to generate two orthogonal polarized beams with different frequencies, and with the amount of frequency difference depending upon the angle of orientation of the crystalline axis of the quartz plate with respect to the longitudinal axis of the laser beam in the cavity. Frequency differences between the generated dual frequency beams can be varied from tens of MHz to more than 1000 MHz, with tuning or variation being effected by a mechanism for rotating the quartz plate. This apparatus provides a dual-frequency laser for interferometry, laser Doppler velocimeters and other applications.
摘要翻译：将双折射石英板插入激光腔中以产生具有不同频率的两个正交偏振光束，并且随着石英板的晶体轴相对于激光纵轴的取向角度的频率差异的量光束在腔内。所产生的双频波束之间的频率差可以从几十MHz变化到大于1000MHz，通过用于旋转石英板的机构实现调谐或变化。该装置提供用于干涉测量的双频激光器，激光多普勒测速仪和其他应用。

2. 发明授权

US07106451B2 Frequency splitting laser micrometer 失效
标题翻译：分频激光测微计
公开(公告)号：US07106451B2
公开(公告)日：2006-09-12
申请号：US10445571
申请日：2003-05-27
申请人： Shulian Zhang , Yan Li , Yingchun Ding , Jun Zhu
发明人： Shulian Zhang , Yan Li , Yingchun Ding , Jun Zhu
IPC分类号： G01B9/02
CPC分类号： G01B11/026 , G01D5/266
摘要： A frequency splitting laser micrometer for measuring a displacement of an object. The laser micrometer includes a frequency splitting laser directing a first frequency splitting laser beam to the object via a laser output mirror at one end of the laser. The first laser beam is reflected thus outputting a second frequency splitting laser beam, such that a feedback cavity is created, wherein a frequency of the second laser beam is decided by a cavity length of said feedback cavity and accordingly the displacement of the object. A detecting and signal processing unit receives said first and second frequency splitting laser beams and measures the displacement of the object according to interference effects of said first and second laser beams.
摘要翻译：用于测量物体位移的分频激光测微计。激光测微计包括分频激光器，其通过激光器一端处的激光输出反射镜将第一分频激光束引导到物体。第一激光束被反射，从而输出第二分频激光束，使得产生反馈空腔，其中第二激光束的频率由所述反馈空腔的空腔长度决定，因此由物体的位移决定。检测和信号处理单元接收所述第一和第二分频激光束，并根据所述第一和第二激光束的干涉效应来测量物体的位移。

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