Terahertz sensing and imaging using a quantum cascade laser

Paul Dean; Alex Valavanis; Suraj P. Khanna; Mohammad Lachab; Dragan Indjin; Zoran Ikonić; Paul Harrison; Edmund H. Linfield; A. Giles Davies; Yah Leng Lim; Russell Kliese; Milan Nikolić; Stephen J. Wilson; Aleksandar D. Rakić

doi:10.1109/ICSENS.2011.6127149

Terahertz sensing and imaging using a quantum cascade laser

Paul Dean, Alex Valavanis, Suraj P. Khanna, Mohammad Lachab, Dragan Indjin, Zoran Ikonić, Paul Harrison, Edmund H. Linfield, A. Giles Davies, Yah Leng Lim, Russell Kliese, Milan Nikolić, Stephen J. Wilson, Aleksandar D. Rakić

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

We demonstrate terahertz (THz) frequency imaging and sensing using 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 THz 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 offers high sensitivity, a potentially fast response, and a simple, compact optical design. We show that it can be used to obtain high-resolution reflection images of exemplar structures, as well as for the measurement of the displacement of a remote target, both with and without opaque (in the visible spectrum) materials in the beam path. We also demonstrate displacement sensing over a stand-off distance of 7m through air.

Original language	English
Title of host publication	IEEE Sensors 2011 Conference, SENSORS 2011
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	51-54
Number of pages	4
ISBN (Electronic)	9781424492886, 9781424492893
ISBN (Print)	9781424492909
DOIs	https://doi.org/10.1109/ICSENS.2011.6127149
Publication status	Published - 12 Jan 2012
Externally published	Yes
Event	10th IEEE SENSORS Conference 2011 - Limerick, Ireland Duration: 28 Oct 2011 → 31 Oct 2011 Conference number: 10

Publication series

Name	Proceedings of IEEE Sensors
Publisher	IEEE
ISSN (Print)	1930-0395
ISSN (Electronic)	1930-0395

Conference

Conference	10th IEEE SENSORS Conference 2011
Abbreviated title	SENSORS 2011
Country/Territory	Ireland
City	Limerick
Period	28/10/11 → 31/10/11

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10.1109/ICSENS.2011.6127149Licence: Unspecified

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Dean, P., Valavanis, A., Khanna, S. P., Lachab, M., Indjin, D., Ikonić, Z., Harrison, P., Linfield, E. H., Giles Davies, A., Lim, Y. L., Kliese, R., Nikolić, M., Wilson, S. J., & Rakić, A. D. (2012). Terahertz sensing and imaging using a quantum cascade laser. In IEEE Sensors 2011 Conference, SENSORS 2011 (pp. 51-54). [6127149] (Proceedings of IEEE Sensors). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICSENS.2011.6127149

@inproceedings{b4e4d45f0069470889acc42df565b155,

title = "Terahertz sensing and imaging using a quantum cascade laser",

abstract = "We demonstrate terahertz (THz) frequency imaging and sensing using 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 THz 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 offers high sensitivity, a potentially fast response, and a simple, compact optical design. We show that it can be used to obtain high-resolution reflection images of exemplar structures, as well as for the measurement of the displacement of a remote target, both with and without opaque (in the visible spectrum) materials in the beam path. We also demonstrate displacement sensing over a stand-off distance of 7m through air.",

keywords = "Quantum cascade lasers, Imaging, Measurement by laser beam, Optical feedback, Sensors, Displacement measurement, Semiconductor device measurement",

author = "Paul Dean and Alex Valavanis and Khanna, {Suraj P.} and Mohammad Lachab and Dragan Indjin and Zoran Ikoni{\'c} and Paul Harrison and Linfield, {Edmund H.} and {Giles Davies}, A. and Lim, {Yah Leng} and Russell Kliese and Milan Nikoli{\'c} and Wilson, {Stephen J.} and Raki{\'c}, {Aleksandar D.}",

year = "2012",

month = jan,

day = "12",

doi = "10.1109/ICSENS.2011.6127149",

language = "English",

isbn = "9781424492909",

series = "Proceedings of IEEE Sensors",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

pages = "51--54",

booktitle = "IEEE Sensors 2011 Conference, SENSORS 2011",

address = "United States",

note = "10th IEEE SENSORS Conference 2011, SENSORS 2011 ; Conference date: 28-10-2011 Through 31-10-2011",

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Dean, P, Valavanis, A, Khanna, SP, Lachab, M, Indjin, D, Ikonić, Z, Harrison, P, Linfield, EH, Giles Davies, A, Lim, YL, Kliese, R, Nikolić, M, Wilson, SJ & Rakić, AD 2012, Terahertz sensing and imaging using a quantum cascade laser. in IEEE Sensors 2011 Conference, SENSORS 2011., 6127149, Proceedings of IEEE Sensors, Institute of Electrical and Electronics Engineers Inc., pp. 51-54, 10th IEEE SENSORS Conference 2011, Limerick, Ireland, 28/10/11. https://doi.org/10.1109/ICSENS.2011.6127149

Terahertz sensing and imaging using a quantum cascade laser. / Dean, Paul; Valavanis, Alex; Khanna, Suraj P. et al.

IEEE Sensors 2011 Conference, SENSORS 2011. Institute of Electrical and Electronics Engineers Inc., 2012. p. 51-54 6127149 (Proceedings of IEEE Sensors).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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T1 - Terahertz sensing and imaging using a quantum cascade laser

AU - Dean, Paul

AU - Valavanis, Alex

AU - Khanna, Suraj P.

AU - Lachab, Mohammad

AU - Indjin, Dragan

AU - Ikonić, Zoran

AU - Harrison, Paul

AU - Linfield, Edmund H.

AU - Giles Davies, A.

AU - Lim, Yah Leng

AU - Kliese, Russell

AU - Nikolić, Milan

AU - Wilson, Stephen J.

AU - Rakić, Aleksandar D.

N1 - Conference code: 10

PY - 2012/1/12

Y1 - 2012/1/12

N2 - We demonstrate terahertz (THz) frequency imaging and sensing using 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 THz 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 offers high sensitivity, a potentially fast response, and a simple, compact optical design. We show that it can be used to obtain high-resolution reflection images of exemplar structures, as well as for the measurement of the displacement of a remote target, both with and without opaque (in the visible spectrum) materials in the beam path. We also demonstrate displacement sensing over a stand-off distance of 7m through air.

AB - We demonstrate terahertz (THz) frequency imaging and sensing using 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 THz 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 offers high sensitivity, a potentially fast response, and a simple, compact optical design. We show that it can be used to obtain high-resolution reflection images of exemplar structures, as well as for the measurement of the displacement of a remote target, both with and without opaque (in the visible spectrum) materials in the beam path. We also demonstrate displacement sensing over a stand-off distance of 7m through air.

KW - Quantum cascade lasers

KW - Imaging

KW - Measurement by laser beam

KW - Optical feedback

KW - Sensors

KW - Displacement measurement

KW - Semiconductor device measurement

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M3 - Conference contribution

AN - SCOPUS:84856816220

SN - 9781424492909

T3 - Proceedings of IEEE Sensors

SP - 51

EP - 54

BT - IEEE Sensors 2011 Conference, SENSORS 2011

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 10th IEEE SENSORS Conference 2011

Y2 - 28 October 2011 through 31 October 2011

ER -

Terahertz sensing and imaging using a quantum cascade laser

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