DocumentCode
1143142
Title
Distributed Feedback THz Quantum-Cascade Lasers Using Thin Double-Metallic Gratings
Author
Marshall, Owen ; Alton, Jesse ; Worrall, Christopher ; Beere, Harvey ; Ritchie, David A. ; Barbieri, Stefano
Author_Institution
Univ. of Cambridge, Cambridge
Volume
20
Issue
10
fYear
2008
fDate
5/15/2008 12:00:00 AM
Firstpage
857
Lastpage
859
Abstract
Distributed feedback quantum-cascade lasers based on loss-coupled two-metal gratings are presented. Devices lasing on single longitudinal modes between 2.62 and 2.69 THz are demonstrated, with sidemode suppression of 30 dB. In addition, controllable grating coupling strength is demonstrated.
Keywords
distributed feedback lasers; quantum cascade lasers; submillimetre wave lasers; distributed feedback quantum cascade lasers; double metallic gratings; frequency 2.62 THz to 2.69 THz; loss coupled two metal gratings; Distributed feedback devices; Etching; Frequency; Gratings; Laser feedback; Laser modes; Optical films; Optical waveguides; Quantum cascade lasers; Semiconductor lasers; Distributed feedback (DFB) lasers; gallium arsenide; quantum-cascade lasers (QCLs); terahertz (THz);
fLanguage
English
Journal_Title
Photonics Technology Letters, IEEE
Publisher
ieee
ISSN
1041-1135
Type
jour
DOI
10.1109/LPT.2008.921820
Filename
4497372
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