THz near-field microscopy of semiconductor and metal bowtie antennas

Arkabrata Bhattacharya, Giorgos Georgiou, Simon Sawallich, Christopher Matheisen, Michael Nagel, Jaime Gomez Rivas

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

Abstract

We perform THz near-field measurements on bowtie antennas made of doped Si and gold. The measurements show a similar local field enhancement for the different materials. These measurements constitute the first demonstration of plasmonic near-field enhancement using semiconductors at THz frequencies. Semiconductors offer the possibility of ultrafast optical switching of plasmonic resonances (on a ps time scale), which will enable the active control of sub-wavelength fields. Since this excitation can be implemented in picoseconds time scale, these structures can be used as a tool for ultrafast sub-wavelength THz spectroscopic purposes.

Original languageEnglish
Title of host publication2014 39th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2014
Place of PublicationPiscataway
PublisherIEEE Computer Society
ISBN (Electronic)9781479938773978-1-4799-3877-3
DOIs
Publication statusPublished - 1 Jan 2014
Event39th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz 2014) - Tucson, United States
Duration: 14 Sep 201419 Sep 2014
Conference number: 39

Conference

Conference39th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz 2014)
Abbreviated titleIRWWM-THz 2014
CountryUnited States
CityTucson
Period14/09/1419/09/14

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