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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 36, Iss. 13 — Jul. 1, 2011
  • pp: 2587–2589

Terahertz imaging through self-mixing in a quantum cascade laser

Paul Dean, Yah Leng Lim, Alex Valavanis, Russell Kliese, Milan Nikolić, Suraj P. Khanna, Mohammad Lachab, Dragan Indjin, Zoran Ikonić, Paul Harrison, Aleksandar D. Rakić, Edmund H. Linfield, and A. Giles Davies  »View Author Affiliations


Optics Letters, Vol. 36, Issue 13, pp. 2587-2589 (2011)
http://dx.doi.org/10.1364/OL.36.002587


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Abstract

We demonstrate terahertz (THz) frequency imaging using a single quantum cascade laser (QCL) device for both generation and sensing of THz radiation. Detection is achieved by utilizing the effect of self-mixing in the THz QCL, and, specifically, by monitoring perturbations to the voltage across the QCL, induced by light reflected from an external object back into the laser cavity. Self-mixing imaging offers high sensitivity, a potentially fast response, and a simple, compact optical design, and we show that it can be used to obtain high-resolution reflection images of exemplar structures.

© 2011 Optical Society of America

OCIS Codes
(140.5960) Lasers and laser optics : Semiconductor lasers
(040.2235) Detectors : Far infrared or terahertz
(110.6795) Imaging systems : Terahertz imaging
(250.5960) Optoelectronics : Semiconductor lasers

ToC Category:
Imaging Systems

History
Original Manuscript: April 13, 2011
Revised Manuscript: May 25, 2011
Manuscript Accepted: May 31, 2011
Published: July 1, 2011

Citation
Paul Dean, Yah Leng Lim, Alex Valavanis, Russell Kliese, Milan Nikolić, Suraj P. Khanna, Mohammad Lachab, Dragan Indjin, Zoran Ikonić, Paul Harrison, Aleksandar D. Rakić, Edmund H. Linfield, and A. Giles Davies, "Terahertz imaging through self-mixing in a quantum cascade laser," Opt. Lett. 36, 2587-2589 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-13-2587

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