Circuit and method for lessening noise in a laser system...

Details Circuit and method for lessening noise in a laser system... Circuit and method for lessening noise in a laser system...

2007-12-05

2010-11-02

Harvey, Minsun (Department: 2828)

Coherent light generators

Particular beam control device

Nonlinear device

C372S021000, C372S036000, C372S029020, C372S029021, C372S031000

Reexamination Certificate

active

07826502

ABSTRACT:
A method and circuit is disclosed for a laser system wherein the power of the laser signal is kept at a constant near optimum value and a portion of an frequency doubled output signal is monitored and detected so that noise within the frequency doubled output signal can be minimized. A feedback signal is used to dither the temperature of a frequency doubled crystal so as to minimize the noise in the frequency doubled output signal.

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“Noise characteristics of a frequency-doubled Nd:YAG laser with intracavity type II phase-matched KTP” by Chee et al. Optics Commnications, North-Holland Publishing Co., Amsterdam, NL, vol. 118, No. 3, Jul. 15, 1995. pp. 289-296.

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