Title :
Modeling of terahertz near-field imaging: Rigorous simulation and antenna approach
Author :
Popov, Sergei ; Li, Yanlu ; Sergeyev, Sergey ; Friberg, Ari T.
Author_Institution :
Dept. of Microelectron. & Appl. Phys., R. Inst. of Technol. (KTH), Kista, Sweden
Abstract :
In this report, we describe a rigorous numerical model, though only two-dimensional, which overcomes the problems associated with the Mie scattering method. The system is schematically sketched (a) where p-polarized pulse with a central frequency of 2 THz illuminates the probe tip-surface system. The p-polarized field couples more efficiently into the s-SNOM system than an s-polarized one, since the electric field vector of the s-polarized signal is perpendicular to the direction of the probe and has a limited capability of exciting plasmons on the tip.
Keywords :
Mie scattering; antennas; near-field scanning optical microscopy; optical fibre polarisation; plasmons; submillimetre wave imaging; Mie scattering; antenna approach; electric field vector; p-polarized pulse; plasmons; probe tip-surface system; s-SNOM system; terahertz near-field imaging; Capacitance; Circuits; Image resolution; Microscopy; Mie scattering; Optical imaging; Optical scattering; Physics; Probes; Signal resolution;
Conference_Titel :
Lasers and Electro-Optics 2009 and the European Quantum Electronics Conference. CLEO Europe - EQEC 2009. European Conference on
Conference_Location :
Munich
Print_ISBN :
978-1-4244-4079-5
Electronic_ISBN :
978-1-4244-4080-1
DOI :
10.1109/CLEOE-EQEC.2009.5192395