中国激光, 2018, 45 (7): 0704008, 网络出版: 2018-09-11
光学鉴频器的精密温控及其对测量的影响 下载: 1071次
High Precision Temperature Control of Optical Frequency Discriminator and Its Influence on Measurement
摘要
研究了光学鉴频器的精密温控方法及其对鉴频光学谱线、鉴频误差的影响。设计了双层温控结构及电路,采用三线制等长接法、双路电流源方向切换等方式来减小引线电阻影响,消除了两路电流源失配。研究了基于现场可编程门阵列(FPGA)的模拟和数字混合温度控制方法,不同温度设置点的控制实验显示温控精度达到了0.0062 ℃,测量误差为0.0036 ℃。用单频紫外激光测试了该温控精度对光学鉴频器的谱线移动、透过率的影响边界,在该控制精度下的透过率谱线平移为0.11 MHz,造成的速度测量误差为0.0195 m/s。
Abstract
The precision temperature control method of the optical frequency discriminator and its influence on optical transmission spectrum and measurement error are studied. A double-deck temperature controlling structure and corresponding circuit are designed, and the influence of the wire resistance is reduced by using a three-wire equal length method and dual switchable current source, and the mismatch of the current source is eliminated. The analog and digital hybrid temperature control method based on field-programmable gate array (FPGA) is studied. Control experiment with different temperature set points show that the temperature control accuracy is 0.0062 ℃ and the temperature measurement error is 0.0036 ℃. The influence of the temperature control accuracy on the spectral line movement and transmittance of the optical frequency discriminator is tested with a single-frequency ultraviolet laser. The transmittance spectrum line translation under this temperature control accuracy is 0.11 MHz, resulting in a speed measurement error of 0.0195 m/s.
赵存峰, 毕德仓, 姜丽媛, 竹孝鹏, 杜娟, 李文冬, 陈卫标. 光学鉴频器的精密温控及其对测量的影响[J]. 中国激光, 2018, 45(7): 0704008. Cunfeng Zhao, Decang Bi, Liyuan Jiang, Xiaopeng Zhu, Juan Du, Wendong Li, Weibiao Chen. High Precision Temperature Control of Optical Frequency Discriminator and Its Influence on Measurement[J]. Chinese Journal of Lasers, 2018, 45(7): 0704008.