Back to Search Start Over

Determining the terahertz optical properties of subwavelength films using semiconductor surface plasmons.

Authors :
Isaac, T. H.
Barnes, W. L.
Hendry, E.
Source :
Applied Physics Letters; 12/15/2008, Vol. 93 Issue 24, p241115, 3p, 1 Diagram, 1 Graph
Publication Year :
2008

Abstract

By employing a combination of time-domain measurements and numerical calculations, we demonstrate that the semiconductor InSb supports a strongly confined surface plasmon (SP) in the terahertz frequency range. We show that these SPs can be used to enhance the light-matter interaction with dielectric layers above the semiconductor surface, thereby allowing us to detect the presence of polystyrene layers around 1000 times thinner than the free space wavelength of the terahertz light. Finally we discuss the viability of using semiconductor SPs for the purposes of terahertz sensing and spectroscopy. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
00036951
Volume :
93
Issue :
24
Database :
Complementary Index
Journal :
Applied Physics Letters
Publication Type :
Academic Journal
Accession number :
35922097
Full Text :
https://doi.org/10.1063/1.3049350