Terahertz plasmonics with semiconductor surfaces and antennas

J. Gómez Rivas, A. Berrier

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

4 Citations (Scopus)


Semiconductors have a Drude-like behavior at terahertz (THz) frequencies similar to metals at optical frequencies. Narrow band gap semiconductors have a dielectric constant with a negative real component and a relatively small imaginary component. This permittivity is characteristic of noble metals in the visible. Therefore, similar to metals at optical frequencies, semiconductors sustain surface plasmon polaritons (SPPs) or collective oscillations of free charge carriers at the interface with a dielectric. We present here a description of the characteristic lengths of SPPs on semiconductor surfaces. We also consider localized surface plasmon polaritons (LSPPs) in small semiconductor particles or plasmonic antennas. These LSPPs lead to resonances that can be tuned by varying the carrier concentration.
Original languageEnglish
Title of host publicationProceedings of the Asia Pacific Microwave Conference (APMC 2009), 7-10 Dec. 2009, Singapore
Publication statusPublished - 2009
Event2009 Asia-Pacific Microwave Conference, APMC 2009 - Singapore
Duration: 7 Dec 200910 Dec 2009


Conference2009 Asia-Pacific Microwave Conference, APMC 2009
Abbreviated titleAPMC 2009
Internet address


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