Title :
Simultaneously at two wavelengths (5.0 and 7.5 μm) singlemode and tunable quantum cascade distributed feedback lasers
Author :
Straub, A. ; Gmachl, C. ; Sivco, D.L. ; Sergent, A.M. ; Capasso, F. ; Cho, A.Y.
Author_Institution :
Lucent Technol. Bell Labs., Murray Hill, NJ, USA
fDate :
6/6/2002 12:00:00 AM
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 :
Bragg gratings; distributed feedback lasers; laser cavity resonators; laser tuning; quantum well lasers; 5.0 micron; 7.5 micron; Bragg gratings; QC-DFB lasers; heterogeneous-cascade two-wavelength active waveguide core; multisectioned cavity; singlemode emission; singlemode quantum cascade distributed feedback lasers; tunability; tunable quantum cascade distributed feedback lasers;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20020355
