弹光调制的频率自跟踪技术

弹光调制器会受到自身热耗散影响导致弹光晶体自身温度改变，固有频率随温度漂移引起弹光调制的不稳定和调制效率的降低。针对该问题，本文提出频率自跟踪技术。该方法根据温度对弹光调制系统的影响，建立弹光调制系统的动态模型得到反馈信号与高压驱动信号之间相位差最小对应谐振频率的关系,结合基于FPGA 的多通道数字频率和成技术和数学锁相环技术设计并完成了频率自跟踪系统。经实验验证，该设计可实现对频率漂移的跟随，且在驱动信号变化和启动弹光调制器时能自动找到弹光晶体的谐振频率并保持稳定，提高了弹光调制器的稳定性和调制效率。

Abstract

The photoelastic modulator can be affected by its heat dissipation, which induces the change of elasto optical crystal its temperature, natural frequency drift with the temperature caused photoelastic modulation instability and modulation efficiency is decreased. The frequency self tracking technology is presented. According to the effect of temperature on photoelastic modulation system, dynamic model of photoelastic modulation system is established to get the relation between the feedback signal and the high voltage drive signal that the minimum phase difference corresponding resonant frequency. Combined with multichannel Direct Digital Synthesis and Digital Phase Locked Loop technology based on FPGA design, the self frequency tracking system is completed. By experimental verification, the design can achieve the following on the frequency drift, and be able to automatically find elastic optical crystal resonance frequency and remain stable when the drive signal change or start the photoelastic modulator, which improves the stability and modulation efficiency of elastic light modulator.

参考文献

[1] Tien-Hsin Chao，ZHOU Hanying，XIA Xiaowei，et al. Electro-Optic Imaging Fourier Transform Spectrometer [C]// IEEE Aerospace Conference，Big Sky，Mar 7-14，2007：1-6.

[2] 田二明，张记龙，李晓，等. 激光探测系统中小型静态傅里叶变换光谱仪的研究 [J]. 光学精密工程，2008，16(12)： 2524-2530.

TIAN Erming，ZHANG Jilong，LI Xiao，et al. Study on laser detecting system of small static Fourier transform spectrometer [J]. Optics and Precision Engineering，2008，16(12)：2524-2530.

[3] Petkovsek R，Bammer F，Schuocker D，et al. Dual-mode single-crystal photoelastic modulator and possible applications [J]. Applied Optics(S1559-128X)，2009，48(7)：86-91.

[4] 王国梁，李晓，王志斌，等. 弹光调制高压谐振电路设计 [J]. 激光与红外，2014，44(6)：668-671.

WANG Guoliang，LI Xiao，WANG Zhibin，et al. Design of high voltage resonant circuit based on the photoelastic modulator [J]. Laser and Infrared，2014，44(6)：668-671.

[5] 魏海潮，李晓，王志斌，等. 弹光调制干涉具工资热动态模型的分析与研究 [J]. 激光与红外，2013，43(4)：424-427.

WEI Haichao，LI Xiao，WANG Zhibin，et al. Resonant dynamic thermal model of the photoelastic modulated interferometer [J]. Laser and Infrared，2013，43(4)：424-427.

[6] 王志斌，张瑞，赵冬娥，等. 光弹调制差频偏振测量及误差分析 [J]. 光学精密工程，2013，21(4)：876-883.

WANG Zhibin，ZHANG Rui，ZHAO Dong′e，et al. Photoelastic modulation frequency difference polarization measurement and error analysis [J]. Optics and Precision Engineering，2013，21(4)：876-883.

[7] Tudor N Buican. Controlling Resonant Photoelastic Modulators，US：6970278B1 [P]. 2005-11.

[8] 张瑞，王志斌，赵冬娥，等. 双光弹差频调制型偏振光谱测量技术 [J]. 光电工程，2013，40(4)：120-126.

ZHANG Rui，WANG Zhibin，ZHAO Dong′e，et al. Double photoelastic difference frequency modulated polarization spectrum measurementtechnology [J]. Opto-Electronic Engineering，2013，40(4)：120-126.

[9] 景宁，王志斌，张记龙，等. 弹光调制非线性光程差干涉信号的快速反演 [J]. 激光技术，2012，36(2)：271.

JING Ning，WANG Zhibin，ZHANG Jilong，et al. Interferometric signal of the photoelastic modulation nonlinearity of optical path difference fast inversion [J]. Laser Technology，2012，36(2)：271.

[10] WANG B，Jennier List. Basic Optical Properties of the Photoelastic Modulator：Part I. Useful Aperture and Acceptance Angle [C]// Polarization Science and Remote Sensing II，San Diego，California，USA，July 31，2005：436-443.

[11] DINEL D J，DAVIS A，HANCOCK B，et al. Dual-photoelas modulator-based polarimetric imaging concept for aerosol rensensing [J]. Applied Optics(S1559-128X)，2007，46(35)：8428-8445.

[12] BUICAN T N. High retardation-amplitude photoelastic modulator：US，7764415B2 [P]. 2010-07-27.

陈光威, 安永泉, 王志斌, 陈友华, 张敏娟, 王国梁, 杨晓. 弹光调制的频率自跟踪技术[J]. 光电工程, 2015, 42(10): 21. CHEN Guangwei, AN Yongquan, WANG Zhibin, CHEN Youhua, ZHANG Minjuan, WANG Guoliang, YANG Xiao. Self Tracking Technology of Photoelastic Modulation Frequency[J]. Opto-Electronic Engineering, 2015, 42(10): 21.

弹光调制的频率自跟踪技术

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