High power diode-pumped solid state laser with unstable resonato

Details High power diode-pumped solid state laser with unstable resonato High power diode-pumped solid state laser with unstable resonato

1989-12-20

1991-06-04

Gonzalez, Frank

Coherent light generators

Particular resonant cavity

Unstable resonator

372 71, 372 75, 350 9615, 350 9625, H01S 308

Patent

active

050220438

ABSTRACT:
A large number of semiconductor laser sources coupled with tapered fibers provide a high energy density output for the purpose of longitudinal pumping of a solid state gain medium in an unstable resonator. Each semiconductor laser source generates a beam of radiation at the pump wavelength having characteristic lateral and transverse widths. A plurality of light transmitting fibers, each fiber having an input end and an output end, is coupled with the semiconductor laser sources for delivering the light from a remote location to pump the gain medium. The input end of each fiber has a cross-section substantially matching the transverse and lateral widths of the beams generated by the corresponding semiconductor laser source, and is coupled to receive the beam of radiation generated by a corresponding semiconductor laser source. The output ends of the light transmitting fibers are bundled to deliver the beams coupled into the fibers as a composite light source having a high energy density. Hundreds of watts of pump energy can be delivered to an unstable resonator design with a solid state gain medium from a remotely mounted and cooled array of semiconductor lasers.

REFERENCES:
patent: 4688884 (1987-08-01), Scifres et al.
patent: 4713822 (1987-12-01), Lee
patent: 4763975 (1988-08-01), Scifres et al.
patent: 4890289 (1989-12-01), Basu et al.
patent: 4901330 (1990-02-01), Wolfram et al.

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