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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 38, Iss. 18 — Sep. 15, 2013
  • pp: 3475–3477

Terahertz surface plasmon excitation via nonlinear mixing of lasers in a metal-coated optical fiber

Pawan Kumar and V. K. Tripathi  »View Author Affiliations


Optics Letters, Vol. 38, Issue 18, pp. 3475-3477 (2013)
http://dx.doi.org/10.1364/OL.38.003475


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Abstract

Terahertz (THz) surface plasmon generation via nonlinear mixing of laser eigenmodes in an optical fiber coated with ultrathin metal foil and possessing a dielectric constant ripple of wave number q is investigated. The fiber supports THz surface plasma wave (SPW) with plasmon resonance in the THz domain and is controllable by film thickness. The lasers exert a difference frequency ponderomotive force on the electrons of the metal film. The ponderomotive force induces a nonlinear current driving the difference frequency THz SPW. THz amplitude to laser amplitude ratio of the order 102 can be achieved by CO2 laser in megawatt range.

© 2013 Optical Society of America

OCIS Codes
(240.0310) Optics at surfaces : Thin films
(240.6680) Optics at surfaces : Surface plasmons
(240.6690) Optics at surfaces : Surface waves

ToC Category:
Optics at Surfaces

History
Original Manuscript: June 4, 2013
Revised Manuscript: August 12, 2013
Manuscript Accepted: August 12, 2013
Published: September 3, 2013

Citation
Pawan Kumar and V. K. Tripathi, "Terahertz surface plasmon excitation via nonlinear mixing of lasers in a metal-coated optical fiber," Opt. Lett. 38, 3475-3477 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-18-3475


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