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

1997-04-24

1998-11-24

Davie, James W.

Coherent light generators

Particular beam control device

Q-switch

372 21, 372 71, 372 94, 372100, 372106, H01S 310

Patent

active

058417982

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: 5181211 (1993-01-01), Burnham et al.
patent: 5687186 (1997-11-01), Stultz

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