Ultrashort pulsewidth laser ranging system employing a time gate

Details Ultrashort pulsewidth laser ranging system employing a time gate Ultrashort pulsewidth laser ranging system employing a time gate

1994-04-01

1996-12-17

Gonzalez, Frank

Optics: measuring and testing

Range or remote distance finding

With photodetection

356345, 356358, 356349, G01B 902

Patent

active

055859135

ABSTRACT:
An optical correlator is disclosed which, in combination with an ultrafast optical pulsed source, can be used for estimating distances of objects with submicron precision. The system includes at least one ultrafast pulsed laser source feeding into an amplitude-division device, an entity for launching pulsed radiation at the target along with an entity for collecting the radiation scattered or reflected off the surface of the object, a nonlinear device for timegating the collected signal with the amplitude-divided source, and a detection device for observing the timegated signal.

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