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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 18 — Aug. 30, 2010
  • pp: 19185–19191

Tuning a distributed feedback laser with a coupled microcavity

Lukas Mahler, Alessandro Tredicucci, Fabio Beltram, Harvey E. Beere, and David A. Ritchie  »View Author Affiliations


Optics Express, Vol. 18, Issue 18, pp. 19185-19191 (2010)
http://dx.doi.org/10.1364/OE.18.019185


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Abstract

We show that a distributed-feedback terahertz quantum cascade laser can be tuned with a coupled microcavity by anti-crossing of the respective eigenfrequencies. In this proof-of-concept experiment, a tuning range of 20 GHz is obtained, in good agreement with a simple finite element model, which shows that the tuning is determined by the coupling strength between the resonators. The concept could be applied to any laser cavity, but becomes progressively more attractive the lower the emission frequency.

© 2010 OSA

OCIS Codes
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(140.3410) Lasers and laser optics : Laser resonators
(140.3490) Lasers and laser optics : Lasers, distributed-feedback
(140.3600) Lasers and laser optics : Lasers, tunable
(140.3945) Lasers and laser optics : Microcavities
(140.5965) Lasers and laser optics : Semiconductor lasers, quantum cascade

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: June 28, 2010
Revised Manuscript: August 13, 2010
Manuscript Accepted: August 23, 2010
Published: August 25, 2010

Citation
Lukas Mahler, Alessandro Tredicucci, Fabio Beltram, Harvey E. Beere, and David A. Ritchie, "Tuning a distributed feedback laser with a coupled microcavity," Opt. Express 18, 19185-19191 (2010)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-18-19185


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References

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