Journal
APPLIED PHYSICS LETTERS
Volume 89, Issue 14, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2358939
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Lasing properties of room temperature, continuous wave operated distributed feedback (DFB) quantum cascade lasers are reported. A bound-to-continuum active region was used to generate a broad gain spectrum. As a result, first-order DFB lasers employing different periods allowed us to achieve single mode continuous wave emission at several wavelengths ranging from 7.7 to 8.3 mu m at a temperature of +30 degrees C. The frequency span corresponds to 8% of the center frequency. (c) 2006 American Institute of Physics.
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