As an important parameter to reflect the degree of disordered movement of granular system, granular temperature needs to be measured by speckle visibility spectroscopy (SVS). The traditional reflected SVS requires polarizers at the light source and detector to filter the reflected light from the surface and the large thickness of the particle is required. In this paper, a transmission speckle visibility spectroscopy method is proposed. Results show that the method can effectively improve the signal-to-noise ratio of speckle signal and reduce the complexity of measuring device. Moreover, it has great compatibility for the granular system with different thickness.
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