DocumentCode :
1416689
Title :
Author :
Slight, Thomas J. ; Tandoi, Giuseppe ; Revin, Dmitry G. ; McKee, Andrew ; Zhang, Shiyong Y. ; Meredith, Wyn ; Cockburn, John W. ; Ironside, Charles N.
Author_Institution :
Compound Semicond. Technol. Ltd., Glasgow, UK
Volume :
23
Issue :
7
fYear :
2011
fDate :
4/1/2011 12:00:00 AM
Firstpage :
420
Lastpage :
422
Abstract :
We report the development of room-temperature distributed-feedback quantum-cascade lasers operating in a single mode in the 3.34 to 3.35 μm wavelength range. First-order lateral gratings with high aspect ratio (the ratio between the grating etch depth and its period) were formed using inductively coupled plasma etching. The as-cleaved lasers emit in pulsed regime with a sidemode suppression ratio of up to 24 dB and a peak single-mode output power of 130 mW from a single facet.
Keywords :
diffraction gratings; distributed feedback lasers; laser modes; laser stability; optical pulse generation; quantum cascade lasers; sputter etching; distributed-feedback quantum-cascade lasers; grating etch depth; high-aspect-ratio lateral grating; inductively coupled plasma etching; power 130 mW; sidemode suppression ratio; single mode operation; temperature 293 K to 298 K; wavelength 3.34 mum to 3.35 mum; Distributed-feedback (DFB) devices; optical tuning; quantum-cascade lasers (QCLs);
fLanguage :
English
Journal_Title :
Photonics Technology Letters, IEEE
Publisher :
ieee
ISSN :
1041-1135
Type :
jour
DOI :
10.1109/LPT.2010.2103358
Filename :
5678625
Link To Document :
