Document Type

Conference Proceeding

Original Publication Date

2013

Journal/Book/Conference Title

SPIE Micro+Nano Materials, Devices, and Applications

Volume

8923

DOI of Original Publication

10.1117/12.2034334

Comments

Originally published in Proceedings of SPIE. Gregory E. Triplett, “Extending device performance in photonic devices using piezoelectric properties," Proc. SPIE 8923, Micro/Nano Materials, Devices, and Systems, 892324 (7 December 2013). DOI: http://dx.doi.org/10.1117/12.2034334

Date of Submission

July 2018

Abstract

This study focuses on the influence of epi-layer strain and piezoelectric effects in asymmetric GaInAs/GaAlAs action regions that potentially lead to intra-cavity frequency mixing. The theoretical limits for conduction and valence band offsets in lattice-matched semiconductor structures have resulted in the deployment of non-traditional approaches such as strain compensation to extend wavelength in intersubband devices, where strain limits are related to misfit dislocation generation. Strain and piezoelectric effects have been studied and verified using select photonic device designs. Metrics under this effort also included dipole strength, oscillator strength, and offset of energy transitions, which are strongly correlated with induced piezoelectric effects. Unique photonic designs were simulated, modeled, and then fabricated using solid-source molecular beam epitaxy into photonic devices. The initial designs produce "lambda" wavelength, and the introduction of the piezoelectric effect resulted in "lambda/2" wavelength. More importantly, this work demonstrates that the theoretical cutoff wavelength in intersubband lasers can be overcome.

Rights

Copyright 2013 Society of Photo-Optical Instrumentation Engineers (SPIE). One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.

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VCU Electrical and Computer Engineering Publications

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