TITLE

High-performance distributed feedback quantum cascade lasers grown by metalorganic vapor phase epitaxy

AUTHOR(S)
Green, R. P.; Wilson, L. R.; Zibik, E. A.; Revin, D. G.; Cockburn, J. W.; Pflügl, C.; Schrenk, W.; Strasser, G.; Krysa, A. B.; Roberts, J. S.; Tey, C. M.; Cullis, A. G.
PUB. DATE
December 2004
SOURCE
Applied Physics Letters;12/6/2004, Vol. 85 Issue 23, p5529
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We report the operation of distributed feedback quantum cascade lasers, grown by metalorganic vapor phase epitaxy. Single-mode laser emission at λ∼10.3 μm and λ∼7.8 μm is observed from two different samples, with 300 K threshold current densities of Jth∼3 and ∼2.4 kA cm-2, respectively. Structural investigation by x-ray diffraction and transmission electron microscopy, and the close correlation between the predicted and observed emission wavelengths indicate exceptional control of the layer thicknesses, including ultrathin (∼8 Å) barrier layers in the active region. These results confirm metalorganic vapor phase epitaxy as a viable technology for the growth of high-performance quantum cascade lasers.
ACCESSION #
15305427

 

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