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Reduced temperature sensitivity Al/sub x/Ga/sub 1-x/As-GaAs quantum well lasers with (Si/sub 2/)/sub x/(GaAs)/sub 1-x/ ''barriers''

Journal Article · · Appl. Phys. Lett.; (United States)
DOI:https://doi.org/10.1063/1.96455· OSTI ID:5812798

The temperature dependence of threshold current of quantum well heterostructure (QWH) laser diodes is reduced by inserting (Si/sub 2/)/sub x/(GaAs)/sub 1-x/ barriers in the active region. Alloy clustering of the (Si/sub 2/)/sub x/(GaAs)/sub 1-x/ barriers, grown by metalorganic chemical vapor deposition, leads to further QW carrier localization and an increase in T/sub 0/ in the usual expression J/sub th/ = J/sub 0/ exp(T/T/sub 0/) for the threshold current. Values as high as T/sub 0/ = 250-275 /sup 0/C have been measured.

Research Organization:
Electrical Engineering Research Laboratory and Materials Research Laboratory, University of Illinois at Urbana--Champaign, Urbana, Illinois 61801
OSTI ID:
5812798
Journal Information:
Appl. Phys. Lett.; (United States), Journal Name: Appl. Phys. Lett.; (United States) Vol. 48:17; ISSN APPLA
Country of Publication:
United States
Language:
English