DocumentCode
989084
Title
Widely Tunable Micro-Mechanical External-Cavity Diode Laser Emitting Around 2.1 
m
Author
Geerlings, E. ; Rattunde, M. ; Schmitz, J. ; Kaufel, G. ; Wagner, J. ; Bläsi, B. ; Kallweit, D. ; Zappe, H.
Author_Institution
Fraunhofer Inst. for Appl. Solid State Phys., Freiburg
Volume
44
Issue
11
fYear
2008
Firstpage
1071
Lastpage
1075
Abstract
A widely tunable (Deltalambda/lambda = 7%) micro-mechanical external cavity GaSb-based diode laser (muECL) emitting around 2.1 mum is presented. A micro-machined grating with a rectangular grating profile, which can be tilted electrostatically, is employed as wavelength selective element within the external cavity using a Littrow configuration. An optimized grating profile leads to a high diffraction efficiency in the -1st diffraction order and therefore to a broad tuning range of 152 nm. The maximum output power of the fiber coupled muECL system varied only moderately between 22 and 10 mW across the tuning range.
Keywords
diffraction gratings; laser tuning; microcavity lasers; optical fibre couplers; semiconductor lasers; GaSb; Littrow configuration; diffraction efficiency; external-cavity diode laser; laser tuning; micro-machined grating; muECL system; power 10 mW to 22 mW; wavelength 2.1 mum; wavelength selective element; Diffraction gratings; Diode lasers; Gas lasers; Laser beams; Laser modes; Laser tuning; Optical design; Optical waveguides; Power generation; Tunable circuits and devices; External cavity; GaSb; fiber coupled; infrared diode laser; micro-machined grating; tuning range;
fLanguage
English
Journal_Title
Quantum Electronics, IEEE Journal of
Publisher
ieee
ISSN
0018-9197
Type
jour
DOI
10.1109/JQE.2008.2001927
Filename
4674642
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