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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 37, Iss. 19 — Oct. 1, 2012
  • pp: 4083–4085

Coherent phase lock of a 9 μm quantum cascade laser to a 2 μm thulium optical frequency comb

Andrew A. Mills, Davide Gatti, Jie Jiang, Christian Mohr, Will Mefford, Livio Gianfrani, Martin Fermann, Ingmar Hartl, and Marco Marangoni  »View Author Affiliations


Optics Letters, Vol. 37, Issue 19, pp. 4083-4085 (2012)
http://dx.doi.org/10.1364/OL.37.004083


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Abstract

We demonstrate coherent phase locking of a room-temperature continuous-wave quantum cascade laser (QCL) at 9.1 μm to a Tm-fiber laser frequency comb centered at 2 μm, with an integrated residual phase error of 0.9 rad (30 mHz to 1.5 MHz). This resulted in a QCL linewidth reduction from 525 to 25 kHz at 1 ms observation time, limited by the linewidth of the free-running frequency comb.

© 2012 Optical Society of America

OCIS Codes
(120.3930) Instrumentation, measurement, and metrology : Metrological instrumentation
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(190.0190) Nonlinear optics : Nonlinear optics
(270.2500) Quantum optics : Fluctuations, relaxations, and noise
(140.3425) Lasers and laser optics : Laser stabilization
(140.5965) Lasers and laser optics : Semiconductor lasers, quantum cascade

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: August 2, 2012
Manuscript Accepted: August 22, 2012
Published: September 26, 2012

Citation
Andrew A. Mills, Davide Gatti, Jie Jiang, Christian Mohr, Will Mefford, Livio Gianfrani, Martin Fermann, Ingmar Hartl, and Marco Marangoni, "Coherent phase lock of a 9 μm quantum cascade laser to a 2 μm thulium optical frequency comb," Opt. Lett. 37, 4083-4085 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-19-4083

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