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Proceedings Paper

High-power room-temperature continuous-wave operation of quantum cascade lasers grown by GasMBE
Author(s): Allan J. Evans; John Edward David; Lisa C. Doris; Jae Su Yu; Steven Slivken; Manijeh Razeghi
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Paper Abstract

Very high power continuous-wave quantum cascade lasers are demonstrated in the mid-infrared (3 - 6 μm) wavelength range. λ~6 μm high-reflectivity coated QCLs are demonstrated producing over 370 mW continuous-wave power at room temperature with continuous-wave operation up to 333 K. Advanced heterostructure geometries, including the use of a thick electroplated gold, epilayer-side heat sink and a buried-ridge heterostructure are demonstrated to improve laser performance significantly when combined with narrow laser ridges. Recent significant improvements in CW operation are presented and include the development if narrow (9 μm-wide) ridges for high temperature CW operation. GasMBE growth of the strain-balanced λ~6 μm QCL heterostructure is discussed. X-ray diffraction measurements are presented and compared to computer simulations that indicate excellent layer and compositional uniformity of the structure.

Paper Details

Date Published: 6 July 2004
PDF: 8 pages
Proc. SPIE 5359, Quantum Sensing and Nanophotonic Devices, (6 July 2004); doi: 10.1117/12.529664
Show Author Affiliations
Allan J. Evans, Northwestern Univ. (United States)
John Edward David, Northwestern Univ. (United States)
Lisa C. Doris, Northwestern Univ. (United States)
Jae Su Yu, Northwestern Univ. (United States)
Steven Slivken, Northwestern Univ. (United States)
Manijeh Razeghi, Northwestern Univ. (United States)


Published in SPIE Proceedings Vol. 5359:
Quantum Sensing and Nanophotonic Devices
Manijeh Razeghi; Gail J. Brown, Editor(s)

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