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
作者单位
1 中国科学院上海光学精密机械研究所空间激光信息传输与探测技术重点实验室, 上海 201800
2 中国科学院大学, 北京 100049
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.

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