BROAD-BAND OPTICAL-DETECTION OF ULTRASOUND BY 2-WAVE MIXING IN A PHOTOREFRACTIVE CRYSTAL
BROAD-BAND OPTICAL-DETECTION OF ULTRASOUND BY 2-WAVE MIXING IN A PHOTOREFRACTIVE CRYSTAL
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DOI：
10.1063/1.105742
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发表时间：
1991-12-16
影响因子：
4
通讯作者：
MONCHALIN, JP
中科院分区：
文献类型：
--
作者：
ING, RK;MONCHALIN, JP
提出了一种允许利用从散射面聚集的大量光对超声进行宽带(通常为1 kHz)光学检测的方法。被表面散射的波在BaTiO_3光折变晶体内与直接从激光获得的泵浦波混合，以提供无边带的参考波。描述了一种提供灵敏和线性超声位移检测的偏振配置。通过检测激光产生的超声，验证了该方法的有效性。
A method which allows broadband (from typically 1 KHz) optical detection of ultrasound with large light gathering from a scattering surface is presented. The wave scattered by the surface is mixed inside a BaTiO3 photorefractive crystal with a pump wave directly derived from the laser to provide a sideband-free reference wave. A polarization configuration which provides sensitive and linear ultrasonic displacement detection is described. This method is demonstrated by detecting laser generated ultrasound.