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Near-field THz imaging and spectroscopy using a multiple subwavelength aperture modulator

Near-field THz imaging and spectroscopy using a multiple subwavelength aperture modulator
Near-field THz imaging and spectroscopy using a multiple subwavelength aperture modulator
We present a near-field, simultaneous multiple pixel subwavelength THz transmission imaging device based on a solid-state THz spatial modulator. Frequency-division multiplexing is used to acquire multiple pixels simultaneously. The modulator was used to acquire THz transmission images with resolution of λ/4 at 118 µm. The image acquisition speed is 16 times greater than that of a comparable single-aperture subwavelength imaging technique. Additionally, spectroscopic THz imaging with subwavelength spatial resolution can be accomplished with the modulator, and the technique is scalable to at least 100 simultaneous pixels.
165-171
Szelc, Jedrzej
dfb93582-06e6-4848-8fc1-c9547c82c9f7
Rutt, Harvey
e09fa327-0c01-467a-9898-4e7f0cd715fc
Szelc, Jedrzej
dfb93582-06e6-4848-8fc1-c9547c82c9f7
Rutt, Harvey
e09fa327-0c01-467a-9898-4e7f0cd715fc

Szelc, Jedrzej and Rutt, Harvey (2013) Near-field THz imaging and spectroscopy using a multiple subwavelength aperture modulator. IEEE Transactions on Terahertz Science and Technology, 3 (2), 165-171. (doi:10.1109/TTHZ.2012.2232812).

Record type: Article

Abstract

We present a near-field, simultaneous multiple pixel subwavelength THz transmission imaging device based on a solid-state THz spatial modulator. Frequency-division multiplexing is used to acquire multiple pixels simultaneously. The modulator was used to acquire THz transmission images with resolution of λ/4 at 118 µm. The image acquisition speed is 16 times greater than that of a comparable single-aperture subwavelength imaging technique. Additionally, spectroscopic THz imaging with subwavelength spatial resolution can be accomplished with the modulator, and the technique is scalable to at least 100 simultaneous pixels.

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Published date: March 2013
Organisations: Optoelectronics Research Centre, Electronics & Computer Science

Identifiers

Local EPrints ID: 349866
URI: http://eprints.soton.ac.uk/id/eprint/349866
PURE UUID: f79df865-d5e3-4df1-aba1-33d164520532

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Date deposited: 12 Mar 2013 15:39
Last modified: 23 Sep 2019 18:53

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