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Optics Letters

Optics Letters


  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 4 — Feb. 15, 2014
  • pp: 777–780

Terahertz wave generation from thin metal films excited by asymmetrical optical fields

Jianming Dai and X.-C. Zhang  »View Author Affiliations

Optics Letters, Vol. 39, Issue 4, pp. 777-780 (2014)

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We experimentally demonstrated terahertz (THz) wave emission from thin metal (gold) films excited by asymmetrical optical fields synthesized using an in-line phase compensator. By driving the electrons in thin metal films asymmetrically, THz wave emission is observed at normal incidence of two-color pump beams. Coherent control of THz wave emission from metal films suggests that a mechanism similar to that of the air-plasma THz source excited by two-color laser fields can be used to describe the generation processes.

© 2014 Optical Society of America

OCIS Codes
(240.4350) Optics at surfaces : Nonlinear optics at surfaces
(260.3910) Physical optics : Metal optics
(300.2570) Spectroscopy : Four-wave mixing
(300.6495) Spectroscopy : Spectroscopy, teraherz

ToC Category:

Original Manuscript: November 4, 2013
Revised Manuscript: December 20, 2013
Manuscript Accepted: December 29, 2013
Published: February 4, 2014

Jianming Dai and X.-C. Zhang, "Terahertz wave generation from thin metal films excited by asymmetrical optical fields," Opt. Lett. 39, 777-780 (2014)

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