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Dataset relating to 'Apertureless near-field terahertz imaging using the self-mixing effect in a quantum cascade laser'

Dean, Paul and Mitrofanov, Oleg and Keeley, James and Kundu, Iman and Li, Lianhe and Linfield, Edmund and Davies, A Giles (2015) Dataset relating to 'Apertureless near-field terahertz imaging using the self-mixing effect in a quantum cascade laser'. University of Leeds. [Dataset] https://doi.org/10.5518/20

Dataset description

This dataset relates to data presented in the work, 'Apertureless near-field terahertz imaging using the self-mixing effect in a quantum cascade laser'. In this work we report two-dimensional apertureless near-field terahertz (THz) imaging using a quantum cascade laser (QCL) source and scattering probe, and demonstrate a resolution of ~1 μm (~λ/100), which represents the highest value achieved to date with a THz QCL. By employing a detection scheme based on self-mixing interferometry, our approach offers experimental simplicity by removing the need for an external detector, and also provides sensitivity to the phase of the reinjected field. We demonstrate a near-field enhancement of the scattered field amplitude for small probe-sample separations, and investigate how the phase of the reinjected field varies with the round-trip time in the external cavity.

Keywords: terahertz imaging, quantum cascade laser, near-field imaging
Subjects: F000 - Physical sciences > F300 - Physics > F310 - Applied physics
F000 - Physical sciences > F300 - Physics > F360 - Optical physics > F361 - Laser physics
Divisions: Faculty of Engineering > School of Electronic and Electrical Engineering
Related resources:
LocationType
http://dx.doi.org/10.1063/1.4943088Publication
http://eprints.whiterose.ac.uk/96091/Publication
License: Creative Commons Attribution 4.0 International (CC BY 4.0)
Date deposited: 17 Nov 2015 16:29
URI: http://archive.researchdata.leeds.ac.uk/id/eprint/17

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