Wang Detian, Meng Jianhua, Tian Jianhua, Zhu Liguo, Peng Qixian, Li Zeren, Zhao Jianheng
Appl Opt. 2018 Dec 20;57(36):10480-10484. doi: 10.1364/AO.57.010480.
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.
光子多普勒测速技术（PDV）已成为冲击物理实验中主要的领域速度测量技术。在本研究中，我们提出并验证了一种用于PDV的双光纤准轴探头，它由一根多模源光纤和一根单模探测光纤组成。这种结构使探头接收到的光从目标完全反射或散射，因此不受不需要的返回光的影响。通过蒙特卡罗方法计算了探头的光接收效率，并通过静态实验进行了验证。我们通过测量深度达6厘米的动态实验验证了探头的可行性。最重要的是，双光纤准轴探头是用于冲击物理实验的PDV的一种很有前景的补充探头。
