We demonstrate a scheme for displacement measurement by use of the photoelectromotive force effect and a frequency-modulated laser diode. The measurement range can be adjusted by a change in the depth of frequency modulation, thus making the measurement method both simple and versatile.
© 2001 Optical Society of America
(040.5350) Detectors : Photovoltaic
(120.0280) Instrumentation, measurement, and metrology : Remote sensing and sensors
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(160.5320) Materials : Photorefractive materials
(280.3400) Remote sensing and sensors : Laser range finder
Feng Jin, Jacob B. Khurgin, Chen-Chia Wang, Sudhir Trivedi, and Esam Gad, "Displacement measurement with adjustable range by use of the photoelectromotive force effect and a frequency-modulated laser diode," Opt. Lett. 26, 1170-1172 (2001)