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
Available under licence : See the attached licence file.
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.
|Keywords:||Semiconductor lasers, Far infrared or terahertz, Terahertz imaging, Semiconductor lasers|
|Institution:||The University of Leeds|
|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:||06 Jun 2014 18:47|
|Publisher:||Optical Society of America|