1 November 2004 Real-time range finder based on phase- and modulation-amplitude-locked laser diode interferometry
Author Affiliations +
Optical Engineering, 43(11), (2004). doi:10.1117/1.1799071
Abstract
An interferometric range finder that uses both phase-locked and modulation-amplitude-locked techniques in a sinusoidal phase-modulating interference signal is described. It allows us to perform unambiguous and real-time distance measurement. Also, external disturbance superimposed on the interference signal is eliminated by the feedback control. Our preliminary experiments indicate a measurement error of 17.7 μm rms.
Takamasa Suzuki, Tatsuo Iwana, Osami Sasaki, "Real-time range finder based on phase- and modulation-amplitude-locked laser diode interferometry," Optical Engineering 43(11), (1 November 2004). http://dx.doi.org/10.1117/1.1799071
JOURNAL ARTICLE
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KEYWORDS
Modulation

Phase shift keying

Distance measurement

Interferometry

Semiconductor lasers

Feedback control

Control systems

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