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Real-Time Near-Field Terahertz Imaging with Atomic Optical Fluorescence

Wade, C.G.; Šibalić, N.; De Melo, N.R.; Kondo, J.M.; Adams, C.S.; Weatherill, K.J.

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C.G. Wade

N. Šibalić

N.R. De Melo

J.M. Kondo

C.S. Adams


Terahertz (THz) near-field imaging is a flourishing discipline, with applications from fundamental studies of beam propagation to the characterization of metamaterials, and waveguides. Beating the diffraction limit typically involves rastering structures or detectors with length scale shorter than the radiation wavelength; in the THz domain this has been achieved using a number of techniques including scattering tips and apertures. Alternatively, mapping THz fields onto an optical wavelength and imaging the visible light removes the requirement for scanning a local probe, speeding up image collection times. Here, we report THz-to-optical conversion using a gas of highly excited Rydberg atoms. By collecting THz-induced optical fluorescence we demonstrate a real-time image of a THz standing wave and use well-known atomic properties to calibrate the THz field strength.


Wade, C., Šibalić, N., De Melo, N., Kondo, J., Adams, C., & Weatherill, K. (2017). Real-Time Near-Field Terahertz Imaging with Atomic Optical Fluorescence. Nature Photonics, 11(1), 40-43.

Journal Article Type Article
Acceptance Date Oct 4, 2016
Online Publication Date Nov 7, 2016
Publication Date Jan 1, 2017
Deposit Date Mar 11, 2016
Publicly Available Date May 7, 2017
Journal Nature Photonics
Print ISSN 1749-4885
Electronic ISSN 1749-4893
Publisher Nature Research
Peer Reviewed Peer Reviewed
Volume 11
Issue 1
Pages 40-43
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