Spontaneous Rayleigh-Brillouin scattering spectral analysis based on Wiener filter

Jingcheng Shang; Tao Wu; Chuanyin Yang; Huan Yu; Xingdao He

doi:10.1117/12.2284251

24 October 2017 Spontaneous Rayleigh-Brillouin scattering spectral analysis based on Wiener filter

Jingcheng Shang, Tao Wu, Chuanyin Yang, Huan Yu, Xingdao He

Proceedings Volume 10461, AOPC 2017: Optical Spectroscopy and Imaging; 104610S (2017) https://doi.org/10.1117/12.2284251
Event: Applied Optics and Photonics China (AOPC2017), 2017, Beijing, China

Abstract

In this paper, a spontaneous Rayleigh-Brillouin scattering spectrometer is developed to measure the gaseous spontaneous Rayleigh-Brillouin scattering (SRBS) profiles over the pressure range 1 to 6 atm for a wavelength of 532nm at the constant room temperature of 296K and 90⁰ scattering angle. The measured Rayleigh-Brillouin scattering spectra are deconvolved using Wiener filtering to remove the effect of the Airy transmission function of the Fabry-Pérot scanning interferometer and get high resolution Rayleigh-Brillouin scattering spectra. The root-mean-square error is less than 2% and χ² is less than 15 over the pressure range 1 to 6 atm. The comparison between theoretical spectra (Tenti S6 model) and deconvolved Rayleigh-Brillouin scattering spectra is made. Some factors that effected the deconvolution of accuracy are analyzed and discussed.

Citation Download Citation

Jingcheng Shang, Tao Wu, Chuanyin Yang, Huan Yu, and Xingdao He "Spontaneous Rayleigh-Brillouin scattering spectral analysis based on Wiener filter", Proc. SPIE 10461, AOPC 2017: Optical Spectroscopy and Imaging, 104610S (24 October 2017); https://doi.org/10.1117/12.2284251

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