1 November 2004 Real-time range finder based on phase- and modulation-amplitude-locked laser diode interferometry
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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)
Takamasa Suzuki, Takamasa Suzuki, Tatsuo Iwana, Tatsuo Iwana, Osami Sasaki, 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 . Submission:
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