Terahertz imaging through self-mixing in a quantum cascade laser

Paul Dean; Yah Leng Lim; Alex Valavanis; Russell Kliese; Milan Nikolic; Suraj P. Khanna; Mohammad Lachab; Dragan Indjin; Zoran Ikonic; Paul Harrison; Aleksandar D. Rakic; Edmund H. Linfield; A. Giles Davies

doi:10.1364/OL.36.002587

Terahertz imaging through self-mixing in a quantum cascade laser

Paul Dean, Yah Leng Lim, Alex Valavanis, Russell Kliese, Milan Nikolic, Suraj P. Khanna, Mohammad Lachab, Dragan Indjin, Zoran Ikonic, Paul Harrison, Aleksandar D. Rakic, Edmund H. Linfield, A. Giles Davies

Research output: Contribution to journal › Article › peer-review

145 Citations (Scopus)

Abstract

We demonstrate terahertz (THz) frequency imaging using a single quantum cascade laser (QCL) device for both generation and sensing of THz radiation. Detection is achieved by utilizing 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 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.

Original language	English
Pages (from-to)	2587-2589
Number of pages	3
Journal	Optics Letters
Volume	36
Issue number	13
DOIs	https://doi.org/10.1364/OL.36.002587
Publication status	Published - 1 Jul 2011
Externally published	Yes

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title = "Terahertz imaging through self-mixing in a quantum cascade laser",

abstract = "We demonstrate terahertz (THz) frequency imaging using a single quantum cascade laser (QCL) device for both generation and sensing of THz radiation. Detection is achieved by utilizing 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 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 = "Optical design, Quantum cascade lasers",

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T1 - Terahertz imaging through self-mixing in a quantum cascade laser

AU - Dean, Paul

AU - Lim, Yah Leng

AU - Valavanis, Alex

AU - Kliese, Russell

AU - Nikolic, Milan

AU - Khanna, Suraj P.

AU - Lachab, Mohammad

AU - Indjin, Dragan

AU - Ikonic, Zoran

AU - Harrison, Paul

AU - Rakic, Aleksandar D.

AU - Linfield, Edmund H.

AU - Davies, A. Giles

PY - 2011/7/1

Y1 - 2011/7/1

N2 - We demonstrate terahertz (THz) frequency imaging using a single quantum cascade laser (QCL) device for both generation and sensing of THz radiation. Detection is achieved by utilizing 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 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.

AB - We demonstrate terahertz (THz) frequency imaging using a single quantum cascade laser (QCL) device for both generation and sensing of THz radiation. Detection is achieved by utilizing 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 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.

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KW - Quantum cascade lasers

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Terahertz imaging through self-mixing in a quantum cascade laser

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