A Method to Improve Brillouin Linewidth Measurement Accuracy by Eliminating Virtually Imaged Phased Array Instrument Broadening
SSRN Electronic Journal（2022）
Abstract
Confocal Brillouin microscopy based on virtually imaged phased array (VIPA) is a technology that generates high spatial resolution images in a contact-free and lossless way, which is of great significance in the field of biomedicine. In previous measurements, the measured Brillouin linewidth differed significantly from the real linewidth, which was mainly caused by the instrument broadening of VIPA. Unfortunately, the instrument broadening for VIPA has rarely been studied. In this paper, we propose a method to quantify the broadening effect of VIPA, eliminate VIPA instrument broadening, and measure the Brillouin linewidth of glycerol.
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