Design rules for phase-matched terahertz surface electromagnetic wave generation by optical rectification in a nonlinear planar waveguide

Appl Opt. 2008 Feb 1;47(4):489-94. doi: 10.1364/ao.47.000489.

Abstract

The theory of guided waves in metal-dielectric planar multilayer structures is applied to reduce the loss and maximize optical nonlinearity for efficient terahertz-field generation in a surface electromagnetic wave by femtosecond laser pulses confined in a (chi)((2)) nonlinear planar waveguide. For typical parameters of thin-film polymer waveguides and metal-dielectric interfaces, the optimal size of the (chi)((2)) waveguide core providing the maximum efficiency of terahertz plasmon-field generation is shown to be less than the wavelength of the optical pump field.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Algorithms*
  • Computer-Aided Design*
  • Electromagnetic Fields
  • Equipment Design
  • Equipment Failure Analysis
  • Light
  • Metals / chemistry*
  • Microwaves*
  • Nonlinear Dynamics
  • Optics and Photonics / instrumentation*
  • Scattering, Radiation
  • Surface Plasmon Resonance / instrumentation*
  • Surface Properties

Substances

  • Metals