Abstract

We theoretically investigate the excitation of localized surface plasmon resonances (LSPRs) in semiconductor antennas at Terahertz (THz) frequencies. Such resonances induce considerable intensity enhancement of the highly localized electric field. At THz frequencies semiconductors show a Drude-like behavior, similarly to metals at optical frequencies. In fact, in the THz regime, semiconductors with narrow band gap (such as InSb) or doped semiconductor (e.g., Si) have a dielectric constant with a negative real component and a relatively small imaginary component. This is actually the dielectric signature of good metals in the visible and near infrared regimes. Therefore, in analogy to optical plasmonic metal antennas [1], THz plasmonic antennas can be made of semiconductors [2].

© 2009 IEEE

PDF Article
More Like This
Modified Surface Plasmon Antenna for Localized Field Enhancement

Dongxing Wang, Tian Yang, and Kenneth B. Crozier
JWA90 Conference on Lasers and Electro-Optics (CLEO) 2009

Giant electric field enhancement in a multilayered dipole nano-antenna

Evgeny G. Mironov, Abdul Khaleque, Liming Liu, and Haroldo T. Hattori
26P_55 Conference on Lasers and Electro-Optics/Pacific Rim (CLEOPR) 2015

Giant fluorescence enhancement of molecules coupled to plasmonic nanoscale patch antennas

Maiken H. Mikkelsen, Alec Rose, Thang B. Hoang, Felicia McGuire, Jack J. Mock, Cristian Ciracì, and David R. Smith
FTh4E.1 Frontiers in Optics (FiO) 2014

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription