Title :
Impact of dielectric permittivity of a substrate on the THz scattering enhanced due to near-field effect
Author :
Popov, Sergei ; Dong, Lin ; Iyer, Srinivasan ; Sergeyev, Sergey ; Friberg, Ari
Author_Institution :
Opt. Div., R. Inst. of Technol., Kista, Sweden
Abstract :
Enhanced scattering of the THz radiation caused by the interaction of near field component with plasmons in a substrate material results in sub-wavelength resolution within THz range. Variation of dielectric permittivity of organic materials placed on a metal substrate can improve contrast of the image obtained with such a technique.
Keywords :
light scattering; organic compounds; permittivity; plasmons; scanning probe microscopy; terahertz wave imaging; THz scattering; dielectric permittivity; image contrast; metal substrate; near-field effect; organic materials; plasmons; subwavelength resolution; Image resolution; Imaging; Permittivity; Probes; Scattering; Signal resolution; Substrates;
Conference_Titel :
Communications and Photonics Conference and Exhibition (ACP), 2010 Asia
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-7111-9
DOI :
10.1109/ACP.2010.5682535
