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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 46, Iss. 22 — Aug. 1, 2007
  • pp: 5051–5055

Transformation of the multimode terahertz quantum cascade laser beam into a Gaussian, using a hollow dielectric waveguide

Andriy A. Danylov, Jerry Waldman, Thomas M. Goyette, Andrew J. Gatesman, Robert H. Giles, Kurt J. Linden, William R. Neal, William E. Nixon, Michael C. Wanke, and John L. Reno  »View Author Affiliations


Applied Optics, Vol. 46, Issue 22, pp. 5051-5055 (2007)
http://dx.doi.org/10.1364/AO.46.005051


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Abstract

We demonstrate that a short hollow dielectric tube can act as a dielectric waveguide and transform the multimode, highly diverging terahertz quantum cascade laser beam into the lowest order dielectric waveguide hybrid mode, EH 11 , which then couples efficiently to the free-space Gaussian mode, TEM 00 . This simple approach should enable terahertz quantum cascade lasers to be employed in applications where a spatially coherent beam is required.

© 2007 Optical Society of America

OCIS Codes
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(140.3300) Lasers and laser optics : Laser beam shaping
(140.5960) Lasers and laser optics : Semiconductor lasers
(230.7370) Optical devices : Waveguides

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: February 5, 2007
Manuscript Accepted: April 25, 2007
Published: July 9, 2007

Citation
Andriy A. Danylov, Jerry Waldman, Thomas M. Goyette, Andrew J. Gatesman, Robert H. Giles, Kurt J. Linden, William R. Neal, William E. Nixon, Michael C. Wanke, and John L. Reno, "Transformation of the multimode terahertz quantum cascade laser beam into a Gaussian, using a hollow dielectric waveguide," Appl. Opt. 46, 5051-5055 (2007)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-46-22-5051

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