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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 37, Iss. 15 — Aug. 1, 2012
  • pp: 3117–3119

External-cavity diode laser in second-order Littrow configuration

M. Britzger, A. Khalaidovski, B. Hemb, E.-B. Kley, F. Brückner, R.-H. Rinkleff, K. Danzmann, and R. Schnabel  »View Author Affiliations

Optics Letters, Vol. 37, Issue 15, pp. 3117-3119 (2012)

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In this Letter, we propose and demonstrate an external-cavity diode laser in second-order Littrow configuration. This topology utilizes a low-efficiency diffraction grating to establish a high-finesse external cavity, strong optical feedback, a high polarization discrimination, and a circular TEM 00 output mode. In our proof-of-concept experiment, we realized a cavity with a finesse of 1855, being, to the best of our knowledge, the highest value ever reported for a three-port–grating-coupled cavity. With optical feedback, the laser threshold of the laser diode employed was reduced by a factor of 4.

© 2012 Optical Society of America

OCIS Codes
(050.1970) Diffraction and gratings : Diffractive optics
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(140.2020) Lasers and laser optics : Diode lasers
(140.3600) Lasers and laser optics : Lasers, tunable
(230.1950) Optical devices : Diffraction gratings
(230.5750) Optical devices : Resonators

ToC Category:
Lasers and Laser Optics

Original Manuscript: May 11, 2012
Revised Manuscript: June 18, 2012
Manuscript Accepted: June 22, 2012
Published: July 20, 2012

M. Britzger, A. Khalaidovski, B. Hemb, E.-B. Kley, F. Brückner, R.-H. Rinkleff, K. Danzmann, and R. Schnabel, "External-cavity diode laser in second-order Littrow configuration," Opt. Lett. 37, 3117-3119 (2012)

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Fig. 1. Fig. 2. Fig. 3.

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