TITLE

Adiabatic compression of terahertz waves using metal flares

AUTHOR(S)
Theuer, Michael; Beigang, René; Grischkowsky, Daniel R.
PUB. DATE
May 2010
SOURCE
Applied Physics Letters;5/10/2010, Vol. 96 Issue 19, p191110
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We report on the adiabatic free-space coupling of broadband terahertz (THz) radiation through a subwavelength gap using metal flares. Amplitude coupling ratios better than 30% are obtained by optimizing the curvature. This scheme shows a large potential for increasing the sensitivity in THz spectroscopy using high spatial confinement without the need of transmission optics or high precision components. The intrinsic curvature of metal sheets is already sufficient to carry out experiments downsizing the microwave approach.
ACCESSION #
50510748

 

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