Optical Lock-in Vibration Detection Using Photorefractive Four-Wave Mixing
Many important applications for photorefractive crystals (PRCs) have been found recently by various investigators [1–3]. These applications range from volumetric information storage in optical computing to adaptive, remote detection of ultrasonic vibration in optical nondestructive evaluation . In this paper, we propose the use of PRCs for lock-in detection of continuously vibrating structures.
KeywordsReference Beam Signal Beam Photorefractive Crystal Local Refractive Index Vibration Detection
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