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High-power gain-guided coupled-stripe quantum well laser array by hydrogenation

Journal Article · · Appl. Phys. Lett.; (United States)
DOI:https://doi.org/10.1063/1.99349· OSTI ID:5369382
High-power coupled-stripe (ten-stripe) Al/sub x/Ga/sub 1-//sub x/As-GaAs quantum well lasers that are fabricated by hydrogenation are described. Continuous (cw) room-temperature thresholds as low as I/sub th/ = 90 mA and internal quantum efficiency as high as 85% are demonstrated. Continuous 300 K laser operation generating 2 x 375 mW (0.75 W) at 910 mA (10I/sub th/) or 57% efficiency is described (8-..mu..m-wide stripes on 12 ..mu..m centers). Minimal heating effects are observed up to the point of catastrophic failure.
Research Organization:
Electrical Engineering Research Laboratory, Center for Compound Semiconductor Microelectronics, and Materials Research Laboratory, University of Illinois at Urbana--Champaign, Urbana, Illinois 61801
OSTI ID:
5369382
Journal Information:
Appl. Phys. Lett.; (United States), Journal Name: Appl. Phys. Lett.; (United States) Vol. 52:9; ISSN APPLA
Country of Publication:
United States
Language:
English