Abstract

Photonic Doppler velocimetry (PDV) has become a major domain velocity measurement technique for shock physics experiments. In this study, we propose and validate a bi-fiber quasi-axis probe for PDV that consists of a multimode source fiber and a single-mode detection fiber. This structure makes the received light by the probe totally reflected or scattered from the target, and, therefore, is free from the influence of unwanted return light. The light-receiving efficiency of the probe was calculated by the Monte Carlo method and was validated by static experiment. We validate that the feasibility of probe by dynamic experiments with measurement depth up to 6 cm. Above all, the bi-fiber quasi-axis probe is a promising supplementary probe for PDV for shock physics experiments.

© 2018 Optical Society of America

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