High power lasers: achievements, challenges, and opportunities
Lasers with ever increasing high powers, CW as well as pulsed, have been targets for research and developments from the very invention of the laser. Availability of high powers facilitate many practic...
High power, continuous-wave, quantum cascade lasers for MWIR and LWIR applications
Over the past several years, our group has endeavored to develop high power quantum cascade lasers for a variety of remote and high sensitivity infrared applications. The systematic optimization of la...
Improved performance of quantum cascade lasers via manufacturable quality epitaxial side down mounting process utilizing aluminum nitride heatsinks
Proc. SPIE, Vol. 6127, 612702 (2006);
doi:10.1117/12.640089
Online Publication Date: 10 February 2006
Conference Date: Monday 23 January 2006
Conference Location: San Jose, CA, USA
Conference Title: Quantum Sensing and Nanophotonic Devices III
Conference Chairs: Manijeh Razeghi, Gail J. Brown
C. Kumar N. Patel Pranalytica, Inc. and Univ. of California, Los Angeles
Wereport substantially improved performance of high power quantum cascade lasersby utilizing epi-side down mounting that provides superior heat dissipationproperties. We have obtained CW power output of 450mW at 20°C from mid-IR QCLs. The improved thermalmanagement achieved with epi-side down mounting has also permitted usto carry out initial lifetime tests on the mid-IR QCLs. No degradation of power output is seen even afterover 300 hours of CW operation at 25°C with poweroutput in excess of 300 mW. We believe theseimprovements should permit incorporation of mid-IR QCLs in reliable instrumentation.
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