This article is cited in 13 papers

ATOMS, SPECTRA, RADIATIONS

Contrast and resolution enhancement in a confocal terahertz video system

N. N. Zinov'ev^ab, A. V. Andrianov^ba, A. J. Gallant^b, J. M. Chamberlain^b, V. N. Trukhin<sup>a

a</sup> Ioffe Physicotechnical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021, Russia
^b Department of Physics of Durham University, Durham DH1 3LE, UK

Abstract: The effect of image contrast enhancement without the loss of the spectral composition of the radiation under investigation has been experimentally demonstrated for a terahertz far-field video system. The result has been obtained by using a confocal aperture placed in the intermediate-focus region of the optical system. The result is a fundamental advance towards the achievement of subwavelength resolution and the contrast of microscopy video systems in the terahertz spectral range.

PACS: 42.30.Va, 42.68.Sq, 42.79.Ag

Received: 26.08.2008

 English version: Journal of Experimental and Theoretical Physics Letters, 2008, 88:8, 492–495

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