Laser pump cavity apparatus with integral concentrator and metho

Details Laser pump cavity apparatus with integral concentrator and metho Laser pump cavity apparatus with integral concentrator and metho

1997-12-19

2000-04-25

Davie, James W.

Coherent light generators

Particular pumping means

Pumping with optical or radiant energy

372 75, H01S 30941

Patent

active

060552603

ABSTRACT:
A laser pump cavity apparatus with integral concentrator provides uniform gain and high absorption efficiency. The apparatus has a doped solid-state laser medium, a concentrator which has a top cladding layer formed on the top surface of the doped laser medium having a cylindrical focusing surface, a bottom cladding layer formed on the bottom surface of the doped laser crystal having a cylindrical focusing surface, and edge cladding layers formed on the side surfaces of the doped laser medium. Cold plates, each of which also preferably has one cylindrical surface of substantially identical shape, are placed in thermal contact with the cylindrical focusing surfaces of the top and bottom cladding layers to absorb heat. The cylindrical focusing surfaces preferably have hyperbolic or quasi-hyperbolic shape. The laser pump cavity apparatus is preferably edge-pumped with several laser diode arrays focused toward the line foci of the cylindrical focusing surfaces in directions transverse to a laser beam axis.

REFERENCES:
patent: 5307365 (1994-04-01), Stappaerts et al.
patent: 5349600 (1994-09-01), Shinbori et al.
patent: 5581573 (1996-12-01), Tanuma
patent: 5590147 (1996-12-01), Hobbs et al.
patent: 5761233 (1998-06-01), Bruesselbach et al.
Jackson, Stuart D. and Piper, James A., "Encapsulated rod for efficient thermal management in diode-side-pumped Nd:YAG lasers", Applied Optics, vol. 35, No. 15, May 20, 1996.

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