摘要
为了解决传统双折射测量系统在调节光学元件的过程中,结构复杂、耗时长且不状态稳定的问题,采用计算偏振跳变曲线中o光和e光低电平占空比的方法,增加了自动旋转波片的功能,优化出一套具有较高工作效率的双折射测量系统。该系统可自动调整波片快轴方向,使其可对准激光器的本征偏振方向,减少了人为判断波片快轴时可能引入的测量误差。结果表明,波片相位延迟的最大偏差为0.65°,标准差降低28%。双折射测量系统的测量精度及稳定性满足工业化生产的要求。
In order to solve the problem of complex structure,time-consuming and unstable state in the process of adjusting optical elements in a traditional birefringence measurement system,the duty cycles of o light and e light at low levels in polarization flipping curves were calculated.The function of automatic rotating wave-plate was added in a birefringence measurement system optimized with high efficiency.The system can automatically adjust the direction of fast axis of the wave-plate aligned with the intrinsic polarization direction of laser and reduce the measurement error that may be introduced when judging the fast axis of wave-plate artificially.After many measurements,the results show that the maximum deviation of wave-plate phase delay is 0.65°,and the standard deviation is reduced by 28%.The measurement accuracy and stability of birefringence measurement systems have met the requirements of industrial production.
作者
邓勇
马响
DENG Yong;MA Xiang(School of Mechanical Engineering, Nantong University,Nantong 226019, China)
出处
《激光技术》
CAS
CSCD
北大核心
2019年第2期217-221,共5页
Laser Technology
基金
国家自然科学基金资助项目(61475082)
关键词
测量与计量
激光回馈
正交偏振
波片测量
自动控制
measurement and metrology
laser feedback
orthogonal polarization
wave-plate measurement
automatic control
