Real-time range finder based on phase- and modulation-amplitude-locked laser diode interferometry

Takamasa Suzuki; Tatsuo Iwana; Osami Sasaki

doi:10.1117/1.1799071

1 November 2004 Real-time range finder based on phase- and modulation-amplitude-locked laser diode interferometry

Takamasa Suzuki, Tatsuo Iwana, Osami Sasaki

Author Affiliations +

Optical Engineering, Vol. 43, Issue 11, (November 2004). https://doi.org/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.

©(2004) Society of Photo-Optical Instrumentation Engineers (SPIE)

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Takamasa Suzuki, Tatsuo Iwana, and Osami Sasaki "Real-time range finder based on phase- and modulation-amplitude-locked laser diode interferometry," Optical Engineering 43(11), (1 November 2004). https://doi.org/10.1117/1.1799071

Published: 1 November 2004

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