24 October 2017 Spontaneous Rayleigh-Brillouin scattering spectral analysis based on Wiener filter
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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 χ 2 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.
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Jingcheng Shang, Tao Wu, Chuanyin Yang, Huan Yu, 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); doi: 10.1117/12.2284251; https://doi.org/10.1117/12.2284251
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