Abstract

We demonstrate a laser Doppler vibrometer (LDV) based on the serrodyne frequency shifting technique. A proof-of-principle system is implemented on the basis of fiber-optic components but opens the way toward an ultracompact integrated LDV system on a silicon chip. With a low laser power of 50μW, the serrodyne LDV was able to measure submicrometer vibrations with frequencies in the audio range.

© 2011 Optical Society of America

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