Based on coherent detection of Rayleigh - Brillouin temperature measurement

Yeliang Zheng; Yihua Hu; Baokun Huang

doi:10.1117/12.2253801

7 November 2016 Based on coherent detection of Rayleigh - Brillouin temperature measurement

Yeliang Zheng, Yihua Hu, Baokun Huang

Proceedings Volume 10141, Selected Papers of the Chinese Society for Optical Engineering Conferences held July 2016; 1014115 (2016) https://doi.org/10.1117/12.2253801
Event: Selected Proceedings of the Chinese Society for Optical Engineering Conferences held July 2016, 2016, Changchun, China

Abstract

The traditional laser temperature measurement usually adopt the direct detection method, while the direct detection method is easily influenced by aerosol scattering and background stray light. In this paper, the DSC710 balanced detector was first applied to the measurement of complete gas Rayleigh - Brillouin scattering spectrum (RBS). By utilizing the difference of RBS spectrum broadening under different temperature to get the temperature information. In this article, a simple theoretical derivation and error analysis has been made. The results show that using this method can effectively inhibit the interference of background stray light and has high precision.

Citation Download Citation

Yeliang Zheng, Yihua Hu, and Baokun Huang "Based on coherent detection of Rayleigh - Brillouin temperature measurement", Proc. SPIE 10141, Selected Papers of the Chinese Society for Optical Engineering Conferences held July 2016, 1014115 (7 November 2016); https://doi.org/10.1117/12.2253801

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