Dean, P, Lim, Y, Valavanis, A, Kliese, R, Nikolic, M, Khanna, SP, Lachab, M, Indjin, D, Ikonic, Z, Harrison, P, Rakic, A, Linfield, EH and Davies, AG (2011) Terahertz imaging through self-mixing in a quantum cascade laser. Optics Letters, 36 (13). 2587 - 2589 . ISSN 1539-4794
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Abstract
We demonstrate terahertz (THz) frequency imaging through use of a single quantum cascade laser (QCL) device for both generation and sensing of THz radiation. Detection is achieved by utilising the effect of self-mixing in the 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.
| Item Type: | Article |
|---|---|
| Keywords: | Semiconductor lasers, Far infrared or terahertz, Terahertz imaging, Semiconductor lasers |
| Academic Units: | The University of Leeds > Faculty of Engineering (Leeds) > School of Electronic & Electrical Engineering (Leeds) > Institute of Microwaves and Photonics (Leeds) |
| Depositing User: | Symplectic Publications |
| Date Deposited: | 05 Jul 2011 10:38 |
| Last Modified: | 08 Feb 2013 17:32 |
| Published Version: | http://dx.doi.org/10.1364/OL.36.002587 |
| Status: | Published |
| Publisher: | Optical Society of America |
| Identification Number: | 10.1364/OL.36.002587 |
| URI: | http://eprints.whiterose.ac.uk/id/eprint/43114 |
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