Apparatus for and method of frequency conversion

Details Apparatus for and method of frequency conversion Apparatus for and method of frequency conversion

2005-08-09

2005-08-09

Harvey, Min Sun (Department: 2828)

Coherent light generators

Particular resonant cavity

Plural cavities

C372S021000, C372S022000, C372S096000

Reexamination Certificate

active

06928099

ABSTRACT:
Apparatus for frequency conversion of light, the apparatus comprises: a light-emitting device for emitting a light having a first frequency, the light-emitting device being an edge-emitting semiconductor light-emitting diode having an extended waveguide selected such that a fundamental transverse mode of the extended waveguide is characterized by a low beam divergence. The apparatus further comprises a light-reflector, constructed and designed so that the light passes a plurality of times through an external cavity, defined between the light-emitting device and the light-reflector, and provides a feedback for generating a laser light having the first frequency. The apparatus further comprises a non-linear optical crystal positioned in the external cavity and selected so that when the laser light having the first frequency passes a plurality of times through the non-linear optical crystal, the first frequency is converted to a second frequency being different from the first frequency.

REFERENCES:
patent: 5175741 (1992-12-01), Okazaki
patent: 5912910 (1999-06-01), Sanders et al.
patent: 5991317 (1999-11-01), Nighan, Jr. et al.
patent: 6097540 (2000-08-01), Neuberger et al.
patent: 6229828 (2001-05-01), Sanders et al.
patent: 6241720 (2001-06-01), Nighan
patent: 6304585 (2001-10-01), Sanders et al.

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