Strained InGaAs/GaAs Multiple Quantum Wells Grown on Planar and Pre-Patterned GaAs(100) Substrates VIA Molecular Beam Epitaxy: Applications to Light Modulators and Detectors

Author:

Chen Li,Hu Kezhong,Rajkumar K. C.,Guhae S.,Kapre R.,Madhukar A.

Abstract

ABSTRACTWe report the realization of high quality strained InGaAs/GaAs multiple quantum wells (MQW) grown on planar GaAs (100) substrates through optimization of molecular beam epitaxical (MBE) growth conditions and structure. Such MQWs containing ∼ 11% In have lead to the realization of an asymmetric Fabry-Perot (ASFP) reflection modulator with a room temperature contrast ratio of 66:1 and an on-state reflectivity of 30%. For In composition ≥ 0.2, the improved optical quality for very thick (gt;2μm) InGaAs/GaAs MQWs grown on pre-patterned substrates is demonstrated via transmission electron microscopy (TEM) and micro-absorption measurements.

Publisher

Springer Science and Business Media LLC

Subject

General Engineering

Reference17 articles.

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2. Growth of InxGa1−xAs on patterned GaAs(100) substrates

3. GaInAs/GaAs strained layer MQW electroabsorption optical modulator and self-electro-optic effect device

4. Hu Kezhong , Chen Li , Madhukar A. , Chen P. , Kaviani K. , Karim Z. , Kyriakakis C. and Tanguay A. R. Jr. , Appl. Phys. Lett. (submitted).

5. Nucleation mechanisms and the elimination of misfit dislocations at mismatched interfaces by reduction in growth area

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