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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 33, Iss. 5 — Mar. 1, 2008
  • pp: 440–442

Real-time imaging using a 2.8 THz quantum cascade laser and uncooled infrared microbolometer camera

Barry N. Behnken, Gamani Karunasiri, Danielle R. Chamberlin, Peter R. Robrish, and Jérôme Faist  »View Author Affiliations


Optics Letters, Vol. 33, Issue 5, pp. 440-442 (2008)
http://dx.doi.org/10.1364/OL.33.000440


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Abstract

Real-time imaging in the terahertz (THz) spectral range was achieved using a milliwatt-scale, 2.8 THz quantum cascade laser and an uncooled, 160 × 120   pixel microbolometer camera modified with Picarin optics. Noise equivalent temperature difference of the camera in the 1 5 THz frequency range was estimated to be at least 3 K , confirming the need for external THz illumination when imaging in this frequency regime. Despite the appearance of fringe patterns produced by multiple diffraction effects, single-frame and extended video imaging of obscured objects show high-contrast differentiation between metallic and plastic materials, supporting the viability of this imaging approach for use in future security screening applications.

© 2008 Optical Society of America

OCIS Codes
(110.2970) Imaging systems : Image detection systems
(140.5965) Lasers and laser optics : Semiconductor lasers, quantum cascade
(110.6795) Imaging systems : Terahertz imaging

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: December 5, 2007
Revised Manuscript: January 16, 2008
Manuscript Accepted: January 17, 2008
Published: February 20, 2008

Citation
Barry N. Behnken, Gamani Karunasiri, Danielle R. Chamberlin, Peter R. Robrish, and Jérôme Faist, "Real-time imaging using a 2.8 THz quantum cascade laser and uncooled infrared microbolometer camera," Opt. Lett. 33, 440-442 (2008)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-33-5-440

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