TITLE

External cavity quantum cascade laser tunable from 7.6 to 11.4 μm

AUTHOR(S)
Hugi, Andreas; Terazzi, Romain; Bonetti, Yargo; Wittmann, Andreas; Fischer, Milan; Beck, Mattias; Faist, Jérôme; Gini, Emilio
PUB. DATE
August 2009
SOURCE
Applied Physics Letters;8/10/2009, Vol. 95 Issue 6, p061103
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We present the development of a broad gain quantum cascade active region. By appropriate cascade design and using a symmetric active region arrangement, we engineer a flat gain and increase the total modal gain in the desired spectral range. Grating-coupled external cavity quantum cascade lasers using this symmetric active region are tunable from 7.6 to 11.4 μm with a peak optical output power of 1 W and an average output power of 15 mW at room-temperature. With a tuning of over 432 cm-1, this single source covers an emission range of over 39% around the center frequency.
ACCESSION #
43720436

 

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