采用白光干涉色色调信息测量零级波片延迟量的方法  

Method of measuring retardation of zero-order wave plate based on hue value of white-light interference color

作　　者：王军[1] 陈磊[1] 刘兆栋[1] 边疆[1] 王苹[1] 庄严[1] 

机构地区：[1]南京理工大学电子工程与光电技术学院,江苏南京210094

出　　处：《红外与激光工程》2011年第9期1784-1788,共5页Infrared and Laser Engineering

基　　金：江苏省"六大人才高峰"项目(06-E-030)

摘　　要：介绍了一种基于白光干涉色的色调值计算零级波片延迟量的方法,在白光正交偏振系统中,利用HSV色度系统分析白光干涉色,得到干涉色图像的色调值,并使用Soleil-Babinet补偿器标定不同延迟量和其对应的白光干涉色的色调值之间的定量关系,从而实现了根据白光干涉色的色调值计算延迟量的目的。在补偿器丝杆步进位移0.02 mm的情况下,延迟量标定精度为0.95 nm。实验测量了一块565 nm的零级全波片,所得结果与使用分光光度计测量的结果相吻合。结果表明:光源光强不稳定及波片光轴方位角的变化对延迟量测量影响很小。A method of measuring retardation of zero-order wave plate was presented based on the hue of white-light interference color. To calculate the hue value, the white-light interference color was analyzed in the HSV color system. The relations between retardations and its corresponding hue values were calibrated by using a Soleil-Babinet compensator. Therefore the retardation of a test wave plate could be obtained by the hue value of its corresponding white-light interference color, and the calibration accuracy was 0.95 nm when the step of the screw was 0.02 mm. A zero-order wave plate at 565 nm was measured by using the proposed method, and the result was 564.9 nm which coincided with the one obtained by spectroscopic method （565.2 nm）. The unstable intensity of the light source as well as the change of azimuth of optical axis have little influence on the retardation measurement.

关 键 词：延迟量 白光干涉色 色调 Soleil-Babinet补偿器 

分 类 号：TB96[机械工程—光学工程]