具有速度谱分辨能力的角色散FP干涉测量技术

陈光华; 李泽仁; 刘俊; 刘寿先; 彭其先; 袁树云; 阳庆国

doi:10.11858/gywlxb.2012.04.007

具有速度谱分辨能力的角色散FP干涉测量技术

doi: 10.11858/gywlxb.2012.04.007

中国工程物理研究院流体物理研究所，四川绵阳 621900

详细信息

通讯作者:
陈光华 E-mail:chenghmail@yahoo.com.cn

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出版历程
- 收稿日期: 2011-11-01
- 修回日期: 2012-04-28
- 发布日期: 2012-08-15

Angular Dispersion-Type Fabry-Perot Interferometer with Velocity Spectral Resolution

Institute of Fluid Physics, CAEP, Mianyang 621900, China

摘要

摘要: 发展了可用于速度谱诊断的角色散Fabry-Perot干涉测量技术，使不同频移探测激光形成的干涉条纹在空间分离，从而可对单一或混合运动源引起的多普勒频移成分进行检测，并给出物体速度谱分布。利用Fabry-Perot干涉测量技术，开展了激光驱动铝箔飞片实验。随着驱动激光能量的变化，观察到了铝箔飞片的不同速度谱分布，包括没有速度空间分散的速度谱、分裂成几片并以不同速度飞行的离散速度谱、碎片云或射流状态下的连续速度谱分布，此外还观测到了冲击下铝箔/玻璃界面分离引起的条纹分裂现象。
- Fabry-Perot干涉仪 /
- 角色散 /
- 速度谱 /
- 激光驱动飞片
Abstract: An angular dispersion-type Fabry-Perot interferometer is developed to measure the velocity spectrum. Using this interferometer, the interference fringes with different Doppler shift are separated from each other in space, then the Doppler shift arise from a single moving source or multiple moving sources can be detected, and consequently the velocity spectra are obtained. The laser-driven aluminum foil experiments are conducted by the angular dispersion-type Fabry-Perot interferometer. Different kinds of velocity spectrum are obtained as the driving laser energy is changed, including velocity spectrum without velocity dispersion in space, discrete spectrum corresponding to a few pieces of broken aluminum foil with different speed, and continuous spectrum caused by fragment cloud or jet. Moreover, the fringe splitting caused by foil/glass interface separation under shock pressure loading is also observed.
- Fabry-Perot interferometer /
- angular dispersion /
- velocity spectrum /
- laser-driven flyer

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参考文献(16)

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