Light source that utilizes small footprint reference gas...

Details Light source that utilizes small footprint reference gas... Light source that utilizes small footprint reference gas...

2008-06-19

2010-11-30

Harvey, Minsun (Department: 2828)

Coherent light generators

Particular beam control device

Tuning

C372S029010, C372S029011, C372S034000, C372S029020, C372S032000

Reexamination Certificate

active

07843977

ABSTRACT:
A light source and the method for operating the same are disclosed. The light source includes first and second lasers, and first and second wavelength control assemblies. The lasers emit first and second light beams, respectively, at wavelengths that are determined by first and second wavelength control signals. First and second beam splitters split the first and second light beams, respectively, to create first and second sampling light beams. The first and second wavelength control assemblies receive sampling light beams and generate the first and second wavelength control signals such that the wavelengths of the first and second light beams differ by no more than a predetermined amount. The first and second wavelength control assemblies each include an absorption cell having a gas that has an optical absorption that varies with the wavelength of the first and second sampling light beams at wavelengths around the output wavelength of the light source.

REFERENCES:
patent: 3361990 (1968-01-01), Gordon et al.
patent: 4494085 (1985-01-01), Goldberg
patent: 6865196 (2005-03-01), Dobbs et al.
patent: 2004/0035356 (2004-02-01), Zappettini et al.
patent: 2008/0128622 (2008-06-01), Weidmann

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