Absolute wavelength measurement of 633nm iodine stabilized He-Ne laser

Jianbo Wang; Cong Yin; Chunying Shi; Hanping Wang; Shan Cai; Tong Zhang

doi:10.1117/12.2603069

31 August 2021 Absolute wavelength measurement of 633nm iodine stabilized He-Ne laser

Jianbo Wang, Cong Yin, Chunying Shi, Hanping Wang, Shan Cai, Tong Zhang

Proceedings Volume 11907, Sixteenth National Conference on Laser Technology and Optoelectronics; 119071Z (2021) https://doi.org/10.1117/12.2603069
Event: Sixteenth National Conference on Laser Technology and Optoelectronics, 2021, Shanghai, China

Abstract

Accurate iodine spectroscopy measurement plays important role in wavelength metrology, precise spectrum detection and interferometry measurement. In all the spectrum of iodine, the saturation absorption lines at 633 nm are the most widely used with the iodine stabilized He-Ne laser. Due to its weak output power, it is difficult to directly measure the absolute frequency with femtosecond frequency comb. In this paper, we present a new optical beating note system based on polarization maintaining fibers, which is employed to measure the weak iodine stabilized laser successfully. The experimental results show that a standard deviation of the frequency fluctuation of 12 kHz and a relative stability of 1.4×10^-11 at 1 s are obtained, respectively. The reproducibility of the iodine stabilized laser is also studied, and a confident result of 3.8 kHz in peak to peak value is obtained with six months.

Citation Download Citation

Jianbo Wang, Cong Yin, Chunying Shi, Hanping Wang, Shan Cai, and Tong Zhang "Absolute wavelength measurement of 633nm iodine stabilized He-Ne laser", Proc. SPIE 11907, Sixteenth National Conference on Laser Technology and Optoelectronics, 119071Z (31 August 2021); https://doi.org/10.1117/12.2603069

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