Widely Tunable Micro-Mechanical External-Cavity Diode Laser Emitting Around 2.1 \mu m

Widely Tunable Micro-Mechanical External-Cavity Diode Laser Emitting Around 2.1 \mu m

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...

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Veröffentlicht in:IEEE journal of quantum electronics 2008-11, Vol.44 (11), p.1071-1075
Hauptverfasser: Geerlings, E., Rattunde, M., Schmitz, J., Kaufel, G., Wagner, J., Blasi, B., Kallweit, D., Zappe, H.
Format: Artikel
Sprache:eng
Schlagworte:
Diffraction gratings
Diode lasers
Exact sciences and technology
External cavity
fiber coupled
Fundamental areas of phenomenology (including applications)
Gas lasers
GaSb
infrared diode laser
Laser beams
Laser modes
Laser tuning
Lasers
micro-machined grating
Optical design
Optical waveguides
Optics
Physics
Power generation
Semiconductor lasers
laser diodes
Tunable circuits and devices
tuning range
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Beschreibung
Zusammenfassung: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.
ISSN:0018-9197
1558-1713
DOI:10.1109/JQE.2008.2001927