TERAHERTZ QUANTUM CASCADE LASERS (QCLS)
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United States of America Patent
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Issued Date -
Aug 16, 2012
app pub date -
Feb 16, 2010
filing date -
Feb 16, 2009
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Abandoned
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Abstract
Quantum cascade lasers (QCLs), and methods of manufacture of QCLs, comprising an active portion. In some embodiments, the active portion can comprise: a plurality of tensiley strained quantum barrier layers, each comprising GayIn1-yAs; and a plurality of compressively strained quantum well layers, each comprising GaxIn1-xAs. In some embodiments, the active portion can comprise: a plurality of compressively strained quantum barrier layers, each comprising AlyIn1-yAs; and a plurality of tensiley strained quantum well layers, each comprising GaxIn1-xAs. The active portion can be grown on InP substrate.
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