31 January 2013 Frequency stabilization of internal-mirror He-Ne lasers by air cooling
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Proceedings Volume 8759, Eighth International Symposium on Precision Engineering Measurement and Instrumentation; 875942 (2013) https://doi.org/10.1117/12.2016900
Event: International Symposium on Precision Engineering Measurement and Instrumentation 2012, 2012, Chengdu, China
Abstract
Instead of traditional heating method, the cavity length of an internal-mirror He-Ne laser is controlled by air cooling which is generated by a mini cooling fan. A PID servo controlling system is designed to drive the cooling fan tuning the frequency of the laser. The frequency is stabilized by balancing the power of two operating longitudinal modes. Beating with an iodine stabilized He-Ne laser, a relative uncertainty(Δf / ̅f ) of 4.3×10-9 in 5 months, a frequency fluctuation of less than 2.6 MHz and an Allan deviation of 3×10-11 (τ=100 s) in 75 h are obtained.
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Jin Qian, Jin Qian, Zhongyou Liu, Zhongyou Liu, Chunying Shi, Chunying Shi, Xiuying Liu, Xiuying Liu, Jianbo Wang, Jianbo Wang, Cong Yin, Cong Yin, Shan Cai, Shan Cai, } "Frequency stabilization of internal-mirror He-Ne lasers by air cooling", Proc. SPIE 8759, Eighth International Symposium on Precision Engineering Measurement and Instrumentation, 875942 (31 January 2013); doi: 10.1117/12.2016900; https://doi.org/10.1117/12.2016900
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