Two-dimensional coherent laser arrays using grating surface emission
Journal Article
·
· IEEE J. Quant. Electron.; (United States)
The concepts, fabrication, and operating characteristics of monolithic two-dimensional, coherent AlGaAs laser arrays are presented. The arrays consist of 100 (10 x 10) active elements fabricated from a single-quantum-well graded-index separate-confinement heterostructure laser geometry. A surface relief grating is used for feedback and outcoupling. The elements of the array are index-guided ridge lasers with evanescent or Y coupling in the lateral direction and injection coupling longitudinally. The far field, emanating from a 60 /mu/m by 5 mm aperture, measures 0.01/sup 0/ x 1/sup 0/. These arrays emit more than 1 W peak power into a 2 A wavelength interval. By adjusting the drive current to the electrically independent gain sections of these arrays, the angular position of the far-field beam can be steered.
- Research Organization:
- David Sarnoff Research Center, Princeton, NJ (USA)
- OSTI ID:
- 5940291
- Journal Information:
- IEEE J. Quant. Electron.; (United States), Journal Name: IEEE J. Quant. Electron.; (United States) Vol. 25:6; ISSN IEJQA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
420800 -- Engineering-- Electronic Circuits & Devices-- (-1989)
ALUMINIUM ARSENIDES
ALUMINIUM COMPOUNDS
AMPLIFICATION
ARSENIC COMPOUNDS
ARSENIDES
BEAM OPTICS
COHERENT RADIATION
CURRENT DENSITY
DESIGN
EFFICIENCY
ELECTROMAGNETIC RADIATION
FABRICATION
GAIN
GALLIUM ARSENIDES
GALLIUM COMPOUNDS
GEOMETRY
GRATINGS
HETEROJUNCTIONS
JUNCTIONS
LASERS
MATHEMATICS
PNICTIDES
QUANTUM EFFICIENCY
RADIATIONS
SEMICONDUCTOR DEVICES
SEMICONDUCTOR JUNCTIONS
SEMICONDUCTOR LASERS
SOLID STATE LASERS
TWO-DIMENSIONAL CALCULATIONS
WAVELENGTHS
420300* -- Engineering-- Lasers-- (-1989)
420800 -- Engineering-- Electronic Circuits & Devices-- (-1989)
ALUMINIUM ARSENIDES
ALUMINIUM COMPOUNDS
AMPLIFICATION
ARSENIC COMPOUNDS
ARSENIDES
BEAM OPTICS
COHERENT RADIATION
CURRENT DENSITY
DESIGN
EFFICIENCY
ELECTROMAGNETIC RADIATION
FABRICATION
GAIN
GALLIUM ARSENIDES
GALLIUM COMPOUNDS
GEOMETRY
GRATINGS
HETEROJUNCTIONS
JUNCTIONS
LASERS
MATHEMATICS
PNICTIDES
QUANTUM EFFICIENCY
RADIATIONS
SEMICONDUCTOR DEVICES
SEMICONDUCTOR JUNCTIONS
SEMICONDUCTOR LASERS
SOLID STATE LASERS
TWO-DIMENSIONAL CALCULATIONS
WAVELENGTHS