Design of frequency-difference stabilizing system for two-cavity dual-frequency Nd:YAG laser using quadrature-demodulated Pound-Drever-Hall method

Jiang Fei; Jiao Mingxing; Su JuanXing JunhongLiu YunLian TianhongLiu Jianning

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Design of frequency-difference stabilizing system for two-cavity dual-frequency Nd:YAG laser using quadrature-demodulated Pound-Drever-Hall method

机译：Design of frequency-difference stabilizing system for two-cavity dual-frequency Nd:YAG laser using quadrature-demodulated Pound-Drever-Hall method

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摘要

To stabilize the frequency-difference of the two-cavity dual-frequency Nd:YAG laser at 1064 nm, a quadrature-demodulated Pound-Drever-Hall (QD-PDH) frequency-difference stabilizing system has been designed, which is composed of two sets of QD-PDH frequency stabilizing subsystems sharing the same Fabry-Perot cavity as the frequency reference. Both phase modulators are driven by the signals with the same frequency of 10 MHz generated by a single direct digital synthesizer (DDS), and the DDS also outputs the other two orthogonal signals as the demodulation reference signals of both frequency stabilizing subsystems. A QD-PDH frequency-difference stabilizing system for a two-cavity dual-frequency Nd:YAG laser with a frequency-difference of similar to 24 GHz at 1064 nm has been established and investigated experimentally. The experimental results have indicated that during a period of 1 h, the laser frequency stabilities of the linear and right-angle cavities are estimated by Allan variance to be better than 2.3 x 10(-11) and 2.7 x 10(-11), respectively, corresponding to frequency-difference stability of better than 4.2 x 10(-7). Such a frequency-difference-stabilized two-cavity dualfrequency Nd:YAG laser can be used as an ideal light source for the synthetic-wave absolute-distance interferometric system. (C) 2022 Society of Photo-Optical Instrumentation Engineers (SPIE)

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来源
《Optical Engineering》 |2022年第4期|046109-1-046109-10|共10页
作者
Jiang Fei; Jiao Mingxing; Su JuanXing JunhongLiu YunLian TianhongLiu Jianning;
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作者单位

Xian Univ Technol;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类光学仪器;
关键词
two-cavity dual-frequency Nd:YAG laser; frequency-difference stabilization; quadrature demodulation; Pound-Drever-Hall method; Fabry-Perot cavity;

Design of frequency-difference stabilizing system for two-cavity dual-frequency Nd:YAG laser using quadrature-demodulated Pound-Drever-Hall method

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