Real-time nanometer-vibration measurement with a self-mixing microchip solid-state laser
Real-time nanometer-vibration measurement with a self-mixing microchip solid-state laser
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DOI：
10.1364/ol.27.001339
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发表时间：
2002-08-01
期刊：
影响因子：
3.6
通讯作者：
Lim, TS
中科院分区：
文献类型：
--
作者：
Otsuka, K;Abe, K;Lim, TS
利用激光二极管泵浦的微芯片固体激光器，采用自对准光学反馈测振技术，对靶材进行了纳米级振动分析。利用希尔伯特变换对激光输出波形进行了分析，得到了目标的振动波形，该波形是通过激光场和极弱(-100-分贝)调频(FM)反馈场之间的干涉而调制的。通过数值模拟再现了实验信号的特征。利用简单的调频解调电路，实现了振动的实时测量。(C)2002年美国光学学会。
Nanometer vibration analysis of a target has been demonstrated by a self-aligned optical feedback vibrometry technique that uses a laser-diode-pumped microchip solid-state laser. The laser output waveform, which was modulated through interference between a lasing field and an extremely weak (< -100-dB) frequency-modulated (FM) feedback field, was analyzed by the Hilbert transformation to yield the vibration waveform of the target. Experimental signal characteristics have been reproduced by numerical simulations. Real-time vibration measurement has also been achieved with a simple FM demodulation circuit. (C) 2002 Optical Society of America.