A fast ferroelectric liquid-crystal spatial light modulator, originally developed for optical computing, has found a new application in vibrometry. A new scheme of vibration-synchronized double-exposure holographic interferometry is proposed that makes full use of the speed of the ferroelectric liquid-crystal spatial light modulator. Preliminary experiments were performed that demonstrate virtually continuous real-time vibrometric data acquisition.
© 1998 Optical Society of America
(120.2880) Instrumentation, measurement, and metrology : Holographic interferometry
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.3940) Instrumentation, measurement, and metrology : Metrology
(120.7280) Instrumentation, measurement, and metrology : Vibration analysis
(230.6120) Optical devices : Spatial light modulators
Masatoshi Sano, Mitsuo Takeda, Seiji Fukushima, and Takashi Kurokawa, "Real-Time Holographic Vibrometry with a Ferroelectric Liquid-Crystal Spatial Light Modulator," Appl. Opt. 37, 7523-7531 (1998)