摘要
为了快速准确地测量半钢化玻璃的应力双折射大小,实时监测产品质量,结合半经典理论与三镜腔理论模型,研究了基于激光回馈效应的半钢化玻璃应力双折射自动测量技术。测量装置由精密光学元件及运动平台组合搭建,由偏振光低电平的占空比自动判断样品主应力方向,测量效率较高;采用降低输入电压变化梯度的方法,将输出电压控制在较小的范围内波动,提高了压电陶瓷位移稳定性。结果表明,样品应力双折射的大小由调谐曲线上一个偏振跳变周期内偏振跳变点的位置决定,多次测量的最大偏差为6.1nm/cm,标准差低于2.0nm/cm。该技术具有测量周期短、精度高且重复性好等特点,适用于实际生产中。
In order to measure the stress birefringence of heat strengthened glass quickly and accurately,and to monitor the product quality in real time,the automatic stress birefringence measurement technology of heat strengthened glass based on laser feedback was studied by combining the semi-classical theory and the three-mirror cavity theory model.The measuring equipment was composed of precision optical elements and motion platform,and the main stress direction of the sample was automatically judged by calculating the duty cycle of the low level of polarized light.The measurement efficiency was improved;The fluctuation range of output voltage was controlled within a narrow range by reducing the gradient of input voltage change,which improves displacement stability of piezoelectric ceramics.The experimental results show that the value of the stress birefringence of the sample is determined by the position of the flipping point in a polarization flipping period on the tuning curve.The maximum deviation of multiple measurements is 6.1nm/cm and the standard deviation is less than 2.0nm/cm in multiple measurements.Such technology has the characteristics of short measurement period,high precision and good repeatability,which is suitable for practical production.
作者
马响
邓勇
张书练
MA Xiang;DENG Yong;ZHANG Shulian(School of Mechanical Engineering, Nantong University, Nantong 226019, China;State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instruments, Tsinghua University, Beijing 100084, China)
出处
《激光技术》
CAS
CSCD
北大核心
2020年第3期371-376,共6页
Laser Technology
基金
国家自然科学基金资助项目(61775118)。
关键词
激光技术
正交偏振
半钢化玻璃
应力双折射
laser technique
orthogonal polarization
heat strengthened glass
stress birefringence
