Document Type

Thesis

Date of Degree

Spring 2013

Degree Name

MS (Master of Science)

Degree In

Physics

First Advisor

John P. Prineas

Abstract

High power, broadband light sources emitting in the 2-2.5 um wavelength range important for optical sensing of important biomolecules in aqueous solutions such as glucose. Here we demonstrate and analyze superluminescent diodes with output centered at 2.4 ums (range ~2.2-2.5 ums) from GaInAsSb/AlGaAsSb quantum wells in a separate confinement structure. Quasi-continuous wave output of 1 mW is achieved at room temperature for 40m x 2mm devices. Superluminescence is evidenced in superlinear growth, spectral narrowing, and angular narrowing of light output with increasing current injection. The output is analyzed and modeled with semiconductor rate equations, and by varying parameters, potential routes for future improvements are explored, such as additional Auger suppression and photonic mode engineering.

Keywords

Edge Emitter, SLD, Superluminescence

Pages

v, 26 pages

Bibliography

Includes bibliographical references (pages 25-26).

Copyright

Copyright 2013 Michael Wootten

Included in

Physics Commons

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