Experimental study on frequency stabilization method of internal-mirror He-Ne laser | Zendy

Qian Jin | Zendy; Zhongyou Liu | Zendy; Shi Chunying | Zendy; Xiuying Liu | Zendy; Jianbo Wang | Zendy; Cong Yin | Zendy; Shan Cai | Zendy

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Experimental study on frequency stabilization method of internal-mirror He-Ne laser

Author(s) -

Qian Jin,

Zhongyou Liu,

Shi Chunying,

Xiuying Liu,

Jianbo Wang,

Cong Yin,

Shan Cai

Publication year - 2013

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.62.010601

Subject(s) - laser , materials science , optics , beat (acoustics) , laser power scaling , signal (programming language) , laser cooling , thermal , physics , thermodynamics , computer science , programming language

Frequency of an internal-mirror He-Ne laser is stabilized by using a micro cooling fan, instead of traditional heating method. Both the relationship between driving voltage and rotating speed and the thermal expansion of the intermal-mirror laser are discussed. The cavity length of the laser is controlled and adjusted by air cooling. The frequency stabilization is based on a theory of power balance between two longitudinal modes. The average temperature of the laser tube is less than 50 ℃ when the frequency is stabilized. A frequency fluctuation of less than 1.4 MHz in 20 h and a frequency relative standard uncertainty of U=4.710-9 in 4 months are evaluated by measuring the beat signal with a high-precision laser stabilized by iodine.

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