TITLE

Terahertz near-field microspectroscopy

AUTHOR(S)
Knab, J. R.; Adam, A. J. L.; Chakkittakandy, R.; Planken, P. C. M.
PUB. DATE
July 2010
SOURCE
Applied Physics Letters;7/19/2010, Vol. 97 Issue 3, p031115
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Using near-field, terahertz time-domain spectroscopy (THz-TDS), we investigate how the addition of a dielectric material into a subwavelength-diameter, cylindrical waveguide affects its transmission properties. The THz electric near-field is imaged with deep subwavelength resolution as it emerges from filled and unfilled waveguides. Spectroscopic data measured for waveguides filled with polycrystalline D-tartaric acid, and with polyethylene and silicon powders, illustrate the feasibility of this approach for obtaining spectroscopic information from a tiny sample volume.
ACCESSION #
52479369

 

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