@article{54a1ad253a734a6e86c2339c01c08d82,
title = "Demonstration of a self-mixing displacement sensor based on terahertz quantum cascade lasers",
abstract = "There has been growing interest in the use of terahertz (THz) quantum cascade lasers (QCLs) for sensing applications. However, the lack of compact and sensitive THz detectors has limited the potential for commercial exploitation of sensors based on these devices. We have developed a self-mixing sensing technique in which THz QCLs are used for both generation and interferometric sensing of THz radiation, eliminating the need for a separate detector. Using this technique, we have measured the displacement of a remote target, both with and without opaque (in the visible spectrum) materials in the beam path and demonstrated a stand-off distance of up to 7 m in air.",
keywords = "Quantum cascade lasers, Sensors",
author = "{Leng Lim}, Yah and Paul Dean and Milan Nikoli and Russell Kliese and Khanna, {Suraj P.} and Mohammad Lachab and Alex Valavanis and Dragan Indjin and Zoran Ikoni and Paul Harrison and Linfield, {Edmund H.} and {Giles Davies}, A. and Wilson, {Stephen J.} and Raki, {Aleksandar D.}",
note = "Funding Information: This research was supported under Australian Research Council{\textquoteright}s Discovery Projects funding scheme (DP0988072), the ERC Advanced Grants “NOTES” and “TOSCA,” and the Innovative Research Call in Explosives and Weapons Detection (2007), a cross-government programme sponsored by a number of government departments and agencies under the CONTEST strategy.",
year = "2011",
month = aug,
day = "22",
doi = "10.1063/1.3629991",
language = "English",
volume = "99",
journal = "Applied Physics Letters",
issn = "0003-6951",
publisher = "American Institute of Physics Publising LLC",
number = "8",
}