Actions

Download Analytics Citations

Export to: EndNote  |  Zotero  |  Mendeley

Collections

This file is not currently in any collections.

Rapid readout of terahertz orbital angular momentum beams using atom-based imaging [dataset] Open Access

We demonstrate the rapid readout of terahertz (THz) orbital angular momentum (OAM) beams using an atomic-vapour based imaging technique. OAM modes with both azimuthal and radial indices are created using phase-only transmission plates. The beams undergo terahertz to optical conversion in an atomic vapour, before being imaged in the far field using an optical CCD camera. In addition to the spatial intensity profile, we also observe the self-interferogram of the beams by imaging through a tilted lens, allowing the sign and magnitude of the azimuthal index to be read out directly. Using this technique, we can reliably read out the OAM mode of low-intensity beams with high fidelity in 10\,\si{\milli\second}. Such a demonstration is expected to have far-reaching consequences for proposed applications of terahertz OAM beams in communications and microscopy.

Descriptions

Resource type

Dataset

Contributors

Creator: Downes, Lucy ¹
Contact person: Downes, Lucy ¹
Data collector: Downes, Lucy ¹
Contact person: Weatherill, Kevin ¹

¹ Durham University, UK

Funder

Engineering and Physical Sciences Research Council
European Commission

Research methods

Other description

Keyword

Terahertz
Imaging
Orbital angular momentum

Subject

Location

Language

Cited in

Identifier

ark:/32150/r19k41zd56p
doi:10.15128/r19k41zd56p

Rights

Creative Commons Attribution 4.0 International (CC BY)

Publisher

Durham University

Date Created

File Details

Depositor

L.A. Downes

Date Uploaded

18 August 2022, 16:08:45

Date Modified

22 August 2022, 11:08:42

Audit Status

Audits have not yet been run on this file.

Characterization

File format: zip (ZIP Format)

Mime type: application/zip

File size: 887934428

Last modified: 2022:08:22 11:37:39+01:00

Filename: Rapid_Readout_of_THz_OAM_Beams-r19k41zd56p-version1.zip

Original checksum: cc8d8b9abebd2da05fd7ac478ddc5288