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Optics Letters

Optics Letters

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  • Vol. 36, Iss. 18 — Sep. 15, 2011
  • pp: 3587–3589

2 μm semiconductor disk laser with a heterodyne linewidth below 10 kHz

Benno Rösener, Sebastian Kaspar, Marcel Rattunde, Tino Töpper, Christian Manz, Klaus Köhler, Oliver Ambacher, and Joachim Wagner  »View Author Affiliations


Optics Letters, Vol. 36, Issue 18, pp. 3587-3589 (2011)
http://dx.doi.org/10.1364/OL.36.003587


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Abstract

We demonstrate a 2 μm semiconductor disk laser emitting in a single longitudinal mode with a linewidth in the < 10 kHz range. A heterodyne detection scheme was used for precise linewidth measurements. In these experiments, the output beams of two identical laser cavities were superposed in order to generate a beat note signal on a photodiode. In the absence of active frequency stabilization, a linewidth of 45 kHz was measured at an output power of 100 mW . When using a frequency stabilization consisting of a feedback loop with a Fabry–Perot interferometer as wavelength reference, the linewidth could be further reduced to 9 kHz .

© 2011 Optical Society of America

OCIS Codes
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(140.3600) Lasers and laser optics : Lasers, tunable
(140.5960) Lasers and laser optics : Semiconductor lasers
(140.3425) Lasers and laser optics : Laser stabilization
(140.7270) Lasers and laser optics : Vertical emitting lasers

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: June 27, 2011
Revised Manuscript: August 15, 2011
Manuscript Accepted: August 15, 2011
Published: September 12, 2011

Citation
Benno Rösener, Sebastian Kaspar, Marcel Rattunde, Tino Töpper, Christian Manz, Klaus Köhler, Oliver Ambacher, and Joachim Wagner, "2 μm semiconductor disk laser with a heterodyne linewidth below 10 kHz," Opt. Lett. 36, 3587-3589 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-18-3587

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