Active region temperatures of quantum cascade lasers during pulsed excitation

Temperature changes in quantum cascade laser active regions can be accurately estimated, during pulsed excitation, by monitoring the spectral shift of laser's longitudinal modes. Relatively small differences in the amplitude and widths of excitation current pulses yielded large, and therefore e...

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Bibliographic Details
Published in:Journal of applied physics 2007-02, Vol.101 (4), p.044507-044507-5
Main Author: Tober, Richard L.
Format: Article
Language:English
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Summary:Temperature changes in quantum cascade laser active regions can be accurately estimated, during pulsed excitation, by monitoring the spectral shift of laser's longitudinal modes. Relatively small differences in the amplitude and widths of excitation current pulses yielded large, and therefore easily measurable, longitudinal mode shifts. Thus, straightforward experiments can be used estimate active region temperatures and physical parameters.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.2432478