Benefits and limitations in barrier design in InAsP/GaInP strain-balanced MQWs for improving the 1.3 μm waveguide modulator performance

Author

Mei, X.B. ; Loi, K.K. ; Chang, W.S.C. ; Tu, C.W.

Author_Institution

Dept. of Electr. & Comput. Eng., California Univ., San Diego, La Jolla, CA, USA

fYear

1997

fDate

11-15 May 1997

Firstpage

436

Lastpage

439

Abstract

We have investigated the limitations in the barrier design for InAsP/GaInP strain-balanced multiple quantum wells (MQWs) by measuring double-crystal X-ray rocking curves and room-temperature photoluminescence. We show that in thin-barrier (~70 Å) structures with 8 MQWs, zero net strain can not be achieved due to the relaxation of the GaInP barriers caused by higher tensile strain. The net strain has to be designed at the compressive side and within the range of -0.26% to -0.54% to obtain high structural stability. Photocurrent spectra show that with 70 Å-thick barriers, the MQW region is 35% more absorptive than with 115 Å-thick barriers

Keywords

III-V semiconductors; X-ray diffraction; electro-optical modulation; gallium compounds; indium compounds; internal stresses; mechanical stability; optical waveguide components; photoluminescence; semiconductor quantum wells; stress relaxation; 1.3 mum; 115 angstrom; 70 angstrom; GaInP barrier relaxation; InAsP-GaInP; InAsP/GaInP strain-balanced MQWs; barrier design; compressive strain; double-crystal X-ray rocking curves; photocurrent spectra; room-temperature photoluminescence; structural stability; tensile strain; thin-barrier structures; waveguide modulator performance; Capacitive sensors; Indium phosphide; Laser stability; Molecular beam epitaxial growth; Optical modulation; Optical waveguides; Quantum well devices; Structural engineering; Temperature; Tensile strain;

fLanguage

English

Publisher

ieee

Conference_Titel

Indium Phosphide and Related Materials, 1997., International Conference on

Conference_Location

Cape Cod, MA

ISSN

1092-8669

Print_ISBN

0-7803-3898-7

Type

conf

DOI

10.1109/ICIPRM.1997.600187

Filename

600187