Spatially coherent diode laser with lenslike media and feedback

Details Spatially coherent diode laser with lenslike media and feedback Spatially coherent diode laser with lenslike media and feedback

1996-03-26

1998-03-10

Davie, James W.

Coherent light generators

Particular resonant cavity

Distributed feedback

372 45, H01S 310, H01S 319

Patent

active

057270163

ABSTRACT:
In a surface emitting semiconductor laser, a variable index of refraction layer having an approximately parabolically shaped trough therein is positioned adjacent the active lasing region and a straight toothed second order diffraction grating coacts with the refraction layer to produce a broad spatially coherent output beam.

REFERENCES:
patent: 5164956 (1992-11-01), Lang
patent: 5345466 (1994-09-01), Macomber
patent: 5602863 (1997-02-01), Itagaki

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