Eyesafe laser transmitter with brewster angle Q-switch in single

Details Eyesafe laser transmitter with brewster angle Q-switch in single Eyesafe laser transmitter with brewster angle Q-switch in single

1998-08-19

1999-11-23

Buczinski, Stephen C.

Optics: measuring and testing

Range or remote distance finding

With photodetection

356 51, 372 11, G01C 308, H01S 310

Patent

active

059910127

ABSTRACT:
An eyesafe laser (10) transmitter having a single resonator cavity (16) for both the pump laser and the optical parametric oscillator (22). A Nd:YAG rod (24) provides gain for light at a first wavelength. A combined Q-switch/Brewster plate (26) Q-switches the light to increase its intensity and polarizes the light so that its polarization plane is perpendicular to the Z-axis of a KTP crystal functioning as the optical parametric oscillator, thereby providing type II phase matching conditions. The optical parametric oscillator transforms the light at the first wavelength to light at a second wavelength which is output thorough a partially reflective outcoupler at a wavelength which will not harm the eyes.

REFERENCES:
patent: 5377219 (1994-12-01), Geiger
patent: 5390211 (1995-02-01), Clark et al.
patent: 5457707 (1995-10-01), Sobey et al.
patent: 5852492 (1998-12-01), Nimblett et al.

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