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Proceedings Paper

Frequency stabilization of internal-mirror He-Ne lasers by air cooling
Author(s): Jin Qian; Zhongyou Liu; Chunying Shi; Xiuying Liu; Jianbo Wang; Cong Yin; Shan Cai
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Paper 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.

Paper Details

Date Published: 31 January 2013
PDF: 7 pages
Proc. SPIE 8759, Eighth International Symposium on Precision Engineering Measurement and Instrumentation, 875942 (31 January 2013); doi: 10.1117/12.2016900
Show Author Affiliations
Jin Qian, National Institute of Metrology (China)
Zhongyou Liu, National Institute of Metrology (China)
Chunying Shi, National Institute of Metrology (China)
Xiuying Liu, National Institute of Metrology (China)
Jianbo Wang, National Institute of Metrology (China)
Cong Yin, National Institute of Metrology (China)
Shan Cai, National Institute of Metrology (China)

Published in SPIE Proceedings Vol. 8759:
Eighth International Symposium on Precision Engineering Measurement and Instrumentation
Jie Lin, Editor(s)

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