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| PDH激光稳频控制技术研究 | |
| 引用本文： | 卞正兰,黄崇德,高敏,董作人,刘继桥,蔡海文,瞿荣辉. PDH激光稳频控制技术研究[J]. 中国激光, 2012, 39(3): 302001-11 |
| 作者姓名： | 卞正兰 黄崇德 高敏 董作人 刘继桥 蔡海文 瞿荣辉 |
| 作者单位： | 卞正兰:中国科学院上海光学精密机械研究所上海市全固态激光器与应用技术重点实验室， 上海 201800中国科学院研究生院， 北京 100049 黄崇德:中国科学院上海光学精密机械研究所上海市全固态激光器与应用技术重点实验室， 上海 201800中国科学院研究生院， 北京 100049 高敏:中国科学院上海光学精密机械研究所上海市全固态激光器与应用技术重点实验室， 上海 201800 董作人:中国科学院上海光学精密机械研究所上海市全固态激光器与应用技术重点实验室， 上海 201800 刘继桥:中国科学院上海光学精密机械研究所上海市全固态激光器与应用技术重点实验室， 上海 201800 蔡海文:中国科学院上海光学精密机械研究所上海市全固态激光器与应用技术重点实验室， 上海 201800 瞿荣辉:中国科学院上海光学精密机械研究所上海市全固态激光器与应用技术重点实验室， 上海 201800 |
| 基金项目： | 国家自然科学基金(61108028、61178031)资助课题。 |
| 摘 要： | 针对多普勒测风激光雷达系统的应用需求,研制了一套结构紧凑、操作灵活的Pound-Drever-Hall(PDH)激光稳频系统。直接数字频率合成器(DDS)产生激光器高频相位调制信号,模拟混频器解调激光器的频率漂移信息,高集成度的数字信号处理器(DSP)作为稳频控制系统的心脏,负责整个稳频系统的总线控制、信号处理及比例积分微分(PID)伺服等。实验表明,在2.5h内激光器的相对频率漂移不超过±17kHz,其均方根(RMS)误差为5kHz,绝对频率稳定度优于200kHz。在主动对法布里-珀罗干涉仪(FPI)施加6 Hz固定扰动时,系统能够在30ms内迅速恢复稳定。满足直接探测多普勒测风雷达系统中0.1m/s测风精度的应用需求。 |
| 关 键 词： | 激光技术 PDH稳频 法布里-珀罗干涉仪 共振频率 数字信号处理 伺服控制 |
| 收稿时间： | 2011-10-09 |
Research on Control Technique for Pound-Drever-Hall Laser Frequency Stabilizing System |
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| Bian Zhenglan,Huang Chongde,Gao Min,Dong Zuoren,Liu Jiqiao,Cai Haiwen,Qu Ronghui. Research on Control Technique for Pound-Drever-Hall Laser Frequency Stabilizing System[J]. Chinese Journal of Lasers, 2012, 39(3): 302001-11 | |
| Authors: | Bian Zhenglan Huang Chongde Gao Min Dong Zuoren Liu Jiqiao Cai Haiwen Qu Ronghui |
| Affiliation: | 1(1Shanghai Key Laboratory of All Solid-State Laser and Applied Techniques,Shanghai Institute ofOptics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China 2Graduate University of Chinese Academy of Sciences,Beijing 100049,China) |
| Abstract: | A laser frequency stabilizing system for Doppler lidar wind measurement is developed, which has the advantages of compact structure and flexible operation. The radio frequency modulating signal is generated by the direct digital frequency synthesizer (DDS), the laser frequency drifts are demodulated by the analog mixer, and the functions of the bus controlling, signal processing and proportional-integral differential (PID) servo controlling are implemented by the high integrate chip of digital signal processor (DSP) as the heart of the frequency stabilizing system. The measured laser frequency drifts are less than ±17 kHz during 2.5 h, and whose root mean square (RMS) error is 5 kHz, and absolute frequency stability is better than 200 kHz. The anti-interference performance is also measured. The system will take 30 ms to get back into stabilization when a regular disturbance with the frequency of 6 Hz is put on the Fabry-Perot interferometer (FPI). The system can be applied to Doppler lidar wind measurement. |
| Keywords: | laser technique PDH frequency stabilization Fabry-Perot interferometer resonant frequency digital signal process servo control |
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