Distance-Meter Using Self-Coupled Effect of Semiconductor Laser Modulated with Sinusoidal Wave Current.

摘要

A Compact and simple distance meter based on self-coupling effect of semiconductor laser has been developed. Using the interference in the laser resonator with the returned light from the external surface, the sensor of the distance meter is composed of only a laser diode and a lens. As it has no external interference optics, it could be much smaller than the interference measurement.