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Title: Photopumped low threshold Al/sub x/''Ga/sub 1//sub -x/''As -Al/sub x/'Ga/sub 1//sub -x/'As-Al/sub x/Ga/sub 1//sub -x/As (x''approx. 0. 85, x'approx. 0. 3, x = 0) single quantum well lasers

Journal Article · · Appl. Phys. Lett.; (United States)
DOI:https://doi.org/10.1063/1.94091· OSTI ID:6310469

Data are presented showing that it is possible to photopump and operate a quantum well heterostructure laser at equivalent current densities (J/sub eq/) as low as 70 A/cm/sup 2/. Continuous 300-K laser operation of a single 60-A GaAs (x = 0) quantum well in the center of a approx.0.12-..mu..m-thick x'approx.0.30 Al/sub x/'Ga/sub 1-x/'As waveguide (and carrier reservoir), which is confined by x''approx.0.85 Al/sub x/''Ga/sub 1-x/''As layers, is demonstrated at I/sub eq/approx.0.4 mA (168 W/cm/sup 2/, J/sub eq/approx.70 A/cm/sup 2/). These quantum well heterostructures are grown by organometallic vapor phase epitaxy.

Research Organization:
Electrical Engineering Research Laboratory and Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801
OSTI ID:
6310469
Journal Information:
Appl. Phys. Lett.; (United States), Vol. 42:9
Country of Publication:
United States
Language:
English