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Motional information can be buried inside the temporal statistics of scattering light. Here we explore the second order correlation of scattering light to trace back the transverse velocity of objects,… Click to show full abstract
Motional information can be buried inside the temporal statistics of scattering light. Here we explore the second order correlation of scattering light to trace back the transverse velocity of objects, verifying the inverse relationship between the coherence time and the velocity. Based on this principle, a new type of optical velocimeter is demonstrated, which has been further applied to study the fluid flow inside a microfluidic channel. This new noninvasive and easy-to-implement velocimeter may offer a new avenue in many applications.
Journal Title: Laser Physics
Year Published: 2017
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