Midinfrared intersubband absorption in ZnxCd1−xSe/Znx′Cdy′Mg1−x′−y′Se multiple quantum well structures

Authors

H. Lu, The City College of the City University of New York
A. Shen, The City College of the City University of New York
M. C. Tamargo, The City College of the City University of New YorkFollow
C. Y. Song, Institute for Microstructural Sciences
H. C. Liu, Institute for Microstructural Sciences
S. K. Zhang, Institute for Ultrafast Spectroscopy and Lasers
R. R. Alfano, Institute for Ultrafast Spectroscopy and Lasers
M. Muñoz, Virginia Commonwealth University

Document Type

Article

Original Publication Date

2006

Journal/Book/Conference Title

Applied Physics Letters

Volume

89

Issue

13

DOI of Original Publication

10.1063/1.2354578

Comments

Originally published at http://dx.doi.org/10.1063/1.2354578

Date of Submission

April 2015

Abstract

The authors report the observation of intersubband absorption in ZnxCd(1−x)Se/Znx′Cdy′Mg(1−x′−y′)Semultiple quantum wells. Lattice-matched samples were grown by molecular beam epitaxy on InP (001) substrates. Photoluminescence measurements indicate that the samples have excellent material quality. The peak absorption wavelengths measured by Fourier transform infrared spectroscopy are 3.99 and 5.35μm for two samples with ZnxCd(1−x)Se well widths of 28 and 42Å, respectively. These values fall within the 3–5μm wavelength range, which is of interest for midinfrared intersubband devices, such as quantum cascade lasers and quantum well infrared photodetectors. Their experimental results fit well with theoretical predictions based on the envelope function approximation. The results indicate that these wide band gap II-VI materials are very promising for midinfrared intersubband device applications.

Rights

Lu, H., Shen, A., Tamargo, M.C., et al. Midinfrared intersubband absorption in ZnxCd1−xSe/Znx′Cdy′Mg1−x′−y′Se multiple quantum well structures. Applied Physics Letters, 89, 131903 (2006). Copyright © 2006 AIP Publishing LLC.

Is Part Of

VCU Physics Publications