Simultaneously at two wavelengths (5.0 and 7.5 [micro sign]m) singlemode and tunable quantum cascade distributed feedback lasers
- 1 January 2002
- journal article
- Published by Institution of Engineering and Technology (IET) in Electronics Letters
- Vol. 38 (12), 565-567
- https://doi.org/10.1049/el:20020355
Abstract
Quantum cascade distributed feedback (QC-DFB) lasers based on a heterogeneous-cascade two-wavelength active waveguide core and a multisectioned cavity featuring two different Bragg gratings are demonstrated. Optimised lasers display singlemode emission at λ∼5.0 and 7.5 µm simultaneously and a tunability on both modes equal to single-wavelength QC-DFB lasers.Keywords
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