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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 35, Iss. 11 — Jun. 1, 2010
  • pp: 1917–1919

Coherent combining of two quantum-cascade lasers in a Michelson cavity

Guillaume Bloom, Christian Larat, Eric Lallier, Mathieu Carras, and Xavier Marcadet  »View Author Affiliations


Optics Letters, Vol. 35, Issue 11, pp. 1917-1919 (2010)
http://dx.doi.org/10.1364/OL.35.001917


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Abstract

We developed a Michelson-type cavity to achieve coherent combining of two quantum-cascade lasers, emitting at around 4.5 μm . We report a cw combining efficiency of 85% (up to 91% near threshold) with good beam quality ( M 2 < 1.4 ). Despite the interferometric nature of the coupling mechanism, this type of cavity can withstand disturbance from the laboratory environment without significant power fluctuations. Finally, the spectral behavior and the output power dependence on current are explored.

© 2010 Optical Society of America

OCIS Codes
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(140.3298) Lasers and laser optics : Laser beam combining
(140.5965) Lasers and laser optics : Semiconductor lasers, quantum cascade

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: April 6, 2010
Manuscript Accepted: April 27, 2010
Published: May 28, 2010

Citation
Guillaume Bloom, Christian Larat, Eric Lallier, Mathieu Carras, and Xavier Marcadet, "Coherent combining of two quantum-cascade lasers in a Michelson cavity," Opt. Lett. 35, 1917-1919 (2010)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-35-11-1917


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References

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