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Proceedings Paper

Spectroscopy studies of strain-compensated mid-infrared QCL active regions on misoriented substrates
Author(s): Justin S. Grayer; Charles Meyer; Emily Cheng; Gregory Triplett; Denzil Roberts; Peter G. Schunemann
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Paper Abstract

In this work, we perform spectroscopic studies of AlGaAs/InGaAs quantum cascade laser structures that demonstrate frequency mixing using strain-compensated active regions. Using a three-quantum well design based on diagonal transitions, we incorporate strain in the active region using single and double well configurations on various surface planes (100) and (111). We observe the influence of piezoelectric properties in molecular beam epitaxy grown structures, where the addition of indium in the GaAs matrix increases the band bending in between injector regions and demonstrates a strong dependence on process conditions that include sample preparation, deposition rates, mole fraction, and enhanced surface diffusion lengths. We produced mid-infrared structures under identical deposition conditions that differentiate the role of indium(strain) in intracavity frequency mixing and show evidence that this design can potentially be implemented using other material systems.

Paper Details

Date Published: 31 January 2014
PDF: 8 pages
Proc. SPIE 8993, Quantum Sensing and Nanophotonic Devices XI, 89930T (31 January 2014); doi: 10.1117/12.2041073
Show Author Affiliations
Justin S. Grayer, Univ. of Missouri-Columbia (United States)
Charles Meyer, Univ. of Missouri-Columbia (United States)
Emily Cheng, Univ. of Missouri-Columbia (United States)
Gregory Triplett, Univ. of Missouri-Columbia (United States)
Denzil Roberts, Univ. of Missouri-Columbia (United States)
Peter G. Schunemann, BAE Systems (United States)


Published in SPIE Proceedings Vol. 8993:
Quantum Sensing and Nanophotonic Devices XI
Manijeh Razeghi; Eric Tournié; Gail J. Brown, Editor(s)

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