Optical cavity temperature measurement based on the first overtones spontaneous emission spectra for HF chemical laser

Shukai Tang; Liucheng Li; Liping Duo; Yuanhu Wang; Haijun Yu; Yuqi Jin; Fengting Sang

doi:10.1117/12.2065282

3 February 2015 Optical cavity temperature measurement based on the first overtones spontaneous emission spectra for HF chemical laser

Shukai Tang, Liucheng Li, Liping Duo, Yuanhu Wang, Haijun Yu, Yuqi Jin, Fengting Sang

Author Affiliations +

Proceedings Volume 9255, XX International Symposium on High-Power Laser Systems and Applications 2014; 92552C (2015) https://doi.org/10.1117/12.2065282
Event: XX International Symposium on High Power Laser Systems and Applications, 2014, Chengdu, China

Abstract

An optical cavity temperature test method has been established for the HF chemical laser. This method assumes that in HF optical cavity the rotational distribution of vibrationally excited HF molecules meets the statistical thermodynamic distribution, the first overtones (v = 3-1 and 2-0) spontaneous emission spectral intensity distribution is obtained by using OMA V, the optical cavity temperature is calculated by linear fitting the rotational thermal equilibrium distribution formula for each HF vibrationally excited state. This method is simple, reliable, and repeatable. This method can be used to test the optical cavity temperature not only without lasing, but also with lasing.

Citation Download Citation

Shukai Tang, Liucheng Li, Liping Duo, Yuanhu Wang, Haijun Yu, Yuqi Jin, and Fengting Sang "Optical cavity temperature measurement based on the first overtones spontaneous emission spectra for HF chemical laser", Proc. SPIE 9255, XX International Symposium on High-Power Laser Systems and Applications 2014, 92552C (3 February 2015); https://doi.org/10.1117/12.2065282

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