Optical feedback effects on terahertz quantum cascade lasers: modelling and applications

RAKIC, Aleksander D., LIM, Yah Leng, TAIMRE, Thomas, AGNEW, Gary, QI, Xiaoqiong, BERTLING, Karl, HAN, She, KUNDU, Iman, GRIER, Andrew, IKONIC, Zoran, VALAVANIS, Alexander, DEMIC, Aleksandar, KEELEY, James, LI, Lianhe H., LINFIELD, Edmund H., DAVIES, A. Giles, HARRISON, Paul, FERGUSON, Blake, WALKER, Graeme, PROW, Tarl, INDJIN, Dragan and SOYER, H. Peter (2016). Optical feedback effects on terahertz quantum cascade lasers: modelling and applications. In: ZHANG, Cunlin, ZHANG, Xi-Cheng and TANI, Masahiko, (eds.) Infrared, Millimeter-Wave, and Terahertz Technologies. Proceedings of SPIE, IV (10030). Society of Photo-optical Instrumentation Engineers, p. 1003016.

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Abstract

Terahertz (THz) quantum cascade lasers (QCLs) are compact sources of radiation in the 1–5 THz range with significant potential for applications in sensing and imaging. Laser feedback interferometry (LFI) with THz QCLs is a technique utilizing the sensitivity of the QCL to the radiation reflected back into the laser cavity from an external target. We will discuss modelling techniques and explore the applications of LFI in biological tissue imaging and will show that the confocal nature of the QCL in LFI systems, with their innate capacity for depth sectioning, makes them suitable for skin diagnostics with the well-known advantages of more conventional confocal microscopes. A demonstration of discrimination of neoplasia from healthy tissue using a THz, LFI-based system in the context of melanoma is presented using a transgenic mouse model. © (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.

Item Type:	Book Section
Additional Information:	Series ISSN: 0277-786X, ESSN: 1996-756X. From conference volume 10030 Infrared, Millimeter-Wave, and Terahertz Technologies IV, Beijing, China, October 12, 2016
Research Institute, Centre or Group - Does NOT include content added after October 2018:	Materials and Engineering Research Institute > Advanced Coatings and Composites Research Centre
Identification Number:	https://doi.org/10.1117/12.2250621
Page Range:	p. 1003016
Depositing User:	Paul Harrison
Date Deposited:	19 Dec 2016 11:33
Last Modified:	18 Mar 2021 11:43
URI:	https://shura.shu.ac.uk/id/eprint/14294

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