Stepped versus square multiple-quantum-well modulators

Author

Woodward, T.K. ; Cunningham, J.E. ; Jan, W.Y.

Author_Institution

AT&T Bell Labs., Holmdel, NJ, USA

Volume

1

fYear

1994

fDate

31 Oct-3 Nov 1994

Firstpage

93

Abstract

Several authors have demonstrated that quantum well (QW) structures in which the quantum well is graded, stepped, or otherwise modified from the standard square geometry can have an improved quantum-confined Stark effect (QCSE). However, relatively few of these structures have been studied in geometries containing sufficient quantum wells for real modulator use. Here, we report the experimental study of 60-period multiple-quantum well (MQW) structures with photocurrents and in transmission. We have experimentally compared QW geometries containing single- and double-step structures to a standard square QW

Keywords

electro-optical modulation; double-step structures; multiple-quantum-well modulators; photocurrent; quantum-confined Stark effect; single-step structures; square wells; stepped wells; transmission; Absorption; Degradation; Excitons; Gallium arsenide; Geometry; Impurities; Photoconductivity; Quantum well devices; Relativistic quantum mechanics; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics Society Annual Meeting, 1994. LEOS '94 Conference Proceedings. IEEE

Conference_Location

Boston, MA

Print_ISBN

0-7803-1470-0

Type

conf

DOI

10.1109/LEOS.1994.586908

Filename

586908