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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 22 — Oct. 25, 2010
  • pp: 23226–23235

Ultrafast active control of localized surface plasmon resonances in silicon bowtie antennas

Audrey Berrier, Ronald Ulbricht, Mischa Bonn, and Jaime Gómez Rivas  »View Author Affiliations

Optics Express, Vol. 18, Issue 22, pp. 23226-23235 (2010)

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Localized surface plasmon polaritons (LSPPs) provide an efficient means of achieving extreme light concentration. In recent years, their active control has become a major aspiration of plasmonic research. Here, we demonstrate direct control of semiconductor bowtie antennas, enabling active excitation of LSPPs, at terahertz (THz) frequencies. We modify the LSPPs by ultrafast optical modulation of the free carrier density in the plasmonic structure itself, allowing for active control of the semiconductor antennas on picosecond timescales. Moreover, this control enables the manipulation of the field intensity enhancements in ranges of four orders of magnitude.

© 2010 OSA

OCIS Codes
(240.6680) Optics at surfaces : Surface plasmons
(320.7130) Ultrafast optics : Ultrafast processes in condensed matter, including semiconductors
(130.4815) Integrated optics : Optical switching devices
(250.5403) Optoelectronics : Plasmonics
(300.6495) Spectroscopy : Spectroscopy, teraherz
(250.6715) Optoelectronics : Switching

ToC Category:
Optics at Surfaces

Original Manuscript: September 17, 2010
Revised Manuscript: October 11, 2010
Manuscript Accepted: October 11, 2010
Published: October 19, 2010

Audrey Berrier, Ronald Ulbricht, Mischa Bonn, and Jaime Gómez Rivas, "Ultrafast active control of localized surface plasmon resonances in silicon bowtie antennas," Opt. Express 18, 23226-23235 (2010)

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