Growth and characterization of Znx Cd1-x Se Zn x′ Cd y′ Mg1- x′ - Y′ Se asymmetric coupled quantum well structures for quantum cascade laser applications

W. O. Charles, A. Shen, K. Franz, Claire F. Gmachl, Q. Zhang, Y. Gong, G. F. Neumark, Maria C. Tamargo

Research output: Contribution to journalArticle

9 Scopus citations

Abstract

The authors report the growth of a II-VI Znx Cd1-x Se Zn x′ Cd y′ Mg1- x′ - y′ Se asymmetric coupled quantum well (asymmetric-CQW) structure that was used to investigate the active region of an intersubband electroluminescence structure designed for emission at λ=4.5 μm. Such a structure could comprise the active region of a quantum cascade laser. The results of photoluminescence and Fourier transform infrared spectroscopy analysis show good agreement with the expected transition energies predicted by simulation results for the asymmetric-CQW structure. High resolution x-ray diffraction analysis indicates high structural quality of the sample and good control of the growth.

Original languageEnglish (US)
Pages (from-to)1171-1173
Number of pages3
JournalJournal of Vacuum Science and Technology B: Microelectronics and Nanometer Structures
Volume26
Issue number3
DOIs
StatePublished - Jun 9 2008

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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