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Single and multiple thin-layer (L/sub z/9 or approx. =400 A) In/sub 1-x/Ga/sub x/P/sub 1-z/As/sub z/-InP heterostructure light emitters and lasers (lambdaapprox. 1. 1. mu. m, 77 /sup 0/K)

Journal Article · · J. Appl. Phys.; (United States)
DOI:https://doi.org/10.1063/1.324370· OSTI ID:5338337
Liquid-phase epitaxial (LPE) single and multiple thin quaternary layer In/sub 1-x/Ga/sub x/P/sub 1-z/As/sub z/ laser diodes (xapprox.0.13, zapprox.0.28; lambdaapprox.1.1 ..mu..m, 77 /sup 0/K) that exhibit quantum size effects (QSE) are described. LPE quaternary active layers approaching L/sub z/approx.200 A have been achieved. As a prototype for the behavior of multilayer heterostructures, the operation of single In/sub 1-x/Ga/sub x/P/sub 1-z/As/sub z/ potential wells, or recombination layers, located a small distance into the p side of an InP p-n junction, is considered. Almost all the carrier recombination is observed to occur in the quaternary potential well, and little absorption occurs in the single-active-layer structure, consistent with the small change in the effective index of refraction measured in a large range (1500 A, 150 meV). This general behavior, i.e., single-well recombination, is observed also in thin-active-layer multilayer heterostructures in which the InP layers between quaternary layers are relatively thick (400--1000 A). In multilayered diode structures, distributed feedback may contribute, along with QSE, to modulation of the longitudinal (Fabry-Perot) modes.
Research Organization:
Department of Electrical Engineering and Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801
OSTI ID:
5338337
Journal Information:
J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 49:1; ISSN JAPIA
Country of Publication:
United States
Language:
English