2024
DOI: 10.1364/ol.527996
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Development of a Rayleigh–Brillouin scattering spectrometer for fast high-gas-temperature measurements

Sihao Pi,
Tao Wu,
Hongda Yan
et al.

Abstract: We proposed a Rayleigh–Brillouin scattering (RBS) spectrometer based on a virtually imaged phased array (VIPA) for fast measurements of high-gas temperature. We measured the RBS spectra of air in the temperature range of 374 to 1073 K with an acquisition time of 7 s. We used the Tenti S6 model to fit the spectra and retrieve the absolute temperature values. The root mean square errors of spectra fit residual were less than 3.05%, and the absolute error of the retrieved temperature was less than 39 K. This stud… Show more

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