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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 18 — Sep. 4, 2006
  • pp: 8232–8239

Group front evolution of Gaussian beam refracted from a right- to left-handed medium

Jacek Pniewski and Tomasz Szoplik  »View Author Affiliations

Optics Express, Vol. 14, Issue 18, pp. 8232-8239 (2006)

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Local enhancement of the power flow in a group front of a transient sinusoidal Gaussian beam refracted at the boundary of right- and left-handed media is observed. In vacuum the beam reaches a sinusoidal steady state that is a form of continuous wave (CW) Gaussian beam after 6 wave periods. Behind the interface plane in a low loss double negative medium with normal dispersion the individual Fourier components of the beam diffract at different angles and have diversified phase speeds. This results in the group front build-up that propagates on with the beam and moves sideways with respect to the group velocity direction, where energy is transported. The enhancement is illustrated with 2-D simulations using finite difference time domain (FDTD) method.

© 2006 Optical Society of America

OCIS Codes
(120.5710) Instrumentation, measurement, and metrology : Refraction
(160.4760) Materials : Optical properties
(260.0260) Physical optics : Physical optics
(260.2030) Physical optics : Dispersion
(260.2110) Physical optics : Electromagnetic optics
(350.5500) Other areas of optics : Propagation

ToC Category:

Original Manuscript: June 12, 2006
Revised Manuscript: July 25, 2006
Manuscript Accepted: July 26, 2006
Published: September 1, 2006

Jacek Pniewski and Tomasz Szoplik, "Group front evolution of Gaussian beam refracted from a right- to left-handed medium," Opt. Express 14, 8232-8239 (2006)

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