Gas density measurement in high-pressure conditions by spontaneous Rayleigh-Brillouin scattering

Y. Park; K. Kim; S. Kim; H. Do

doi:10.1117/12.2680922

3 October 2023 Gas density measurement in high-pressure conditions by spontaneous Rayleigh-Brillouin scattering

Y. Park, K. Kim, S. Kim, H. Do

Proceedings Volume 12693, Unconventional Imaging, Sensing, and Adaptive Optics 2023; 126930D (2023) https://doi.org/10.1117/12.2680922
Event: SPIE Optical Engineering + Applications, 2023, San Diego, California, United States

Abstract

Gas densities of various gaseous species are measured up to 16.5 barg via spontaneous Rayleigh-Brillouin scattering (SRBS) induced by a focused 532-nm laser pulse. Laser pulse energy is monitored and controlled according to the gas density for enhancement of the signal-to-noise ratio (SNR) of the SRBS signal, while limited by the threshold of the laser-induced breakdown. SRBS signal is spectrally dispersed by a virtually imaged phased array (VIPA) and formed into a fringe pattern. The SRBS is reconstructed in the frequency domain from each fringe pattern and ensemble-averaged for gas density measurement.

Conference Presentation

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Y. Park, K. Kim, S. Kim, and H. Do "Gas density measurement in high-pressure conditions by spontaneous Rayleigh-Brillouin scattering", Proc. SPIE 12693, Unconventional Imaging, Sensing, and Adaptive Optics 2023, 126930D (3 October 2023); https://doi.org/10.1117/12.2680922

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