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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 38, Iss. 4 — Feb. 15, 2013
  • pp: 407–409

Effective mode selector for tunable terahertz wire lasers

Qi Qin, Ningren Han, Tsung-Yu Kao, John L. Reno, and Qing Hu  »View Author Affiliations


Optics Letters, Vol. 38, Issue 4, pp. 407-409 (2013)
http://dx.doi.org/10.1364/OL.38.000407


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Abstract

We demonstrate an effective mode selector design that enables a terahertz quantum cascade wire laser to have a robust single-mode operation at frequencies much lower than the gain peak. This is achieved by selectively guiding the undesired modes into a lossy session while keeping the desired lasing mode largely unperturbed. The large mode discrimination obtained by this mode selector is necessary to further extend the tuning range to the lower half of the gain curve. Additionally, the connectors of this mode selector conveniently provide electrical bias to the wire lasers without degrading the lasing performance.

© 2013 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

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: September 4, 2012
Manuscript Accepted: October 31, 2012
Published: February 7, 2013

Citation
Qi Qin, Ningren Han, Tsung-Yu Kao, John L. Reno, and Qing Hu, "Effective mode selector for tunable terahertz wire lasers," Opt. Lett. 38, 407-409 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-4-407


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References

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  2. P. H. Siegel, IEEE Trans. Microwave Theor. Tech. 52, 2438 (2004). [CrossRef]
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