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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 13 — Jul. 1, 2014
  • pp: 3962–3965

THz quantum cascade lasers operating on the radiative modes of a 2D photonic crystal

Y. Halioua, G. Xu, S. Moumdji, L. H. Li, A. G. Davies, E. H. Linfield, and R. Colombelli  »View Author Affiliations


Optics Letters, Vol. 39, Issue 13, pp. 3962-3965 (2014)
http://dx.doi.org/10.1364/OL.39.003962


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Abstract

Photonic-crystal lasers operating on Γ-point band-edge states of a photonic structure naturally exploit the so-called “nonradiative” modes. As the surface output coupling efficiency of these modes is low, they have relatively high Q factors, which favor lasing. We propose a new 2D photonic-crystal design that is capable of reversing this mode competition and achieving lasing on the radiative modes instead. Previously, this has only been shown in 1D structures, where the central idea is to introduce anisotropy into the system, both at unit-cell and resonator scales. By applying this concept to 2D photonic-crystal patterned terahertz frequency quantum cascade lasers, surface-emitting devices with diffraction-limited beams are demonstrated, with 17 mW peak output power.

© 2014 Optical Society of America

OCIS Codes
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(230.5298) Optical devices : Photonic crystals
(140.5965) Lasers and laser optics : Semiconductor lasers, quantum cascade
(140.7260) Lasers and laser optics : Vertical cavity surface emitting lasers

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: March 31, 2014
Manuscript Accepted: May 11, 2014
Published: June 27, 2014

Citation
Y. Halioua, G. Xu, S. Moumdji, L. H. Li, A. G. Davies, E. H. Linfield, and R. Colombelli, "THz quantum cascade lasers operating on the radiative modes of a 2D photonic crystal," Opt. Lett. 39, 3962-3965 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-13-3962

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