Second Harmonic Generation from a Polyurethane Waveguide on a Silver Grating Coupler,

Abstract

Organic waveguides are well suited for second harmonic (SH) generation. We present here experimental results of SH generation from a polyurethane waveguide spin-coated on a silver grating coupler. As one of the waveguide boundaries is made from a metal it is possible to excite, in addition to guided modes, a surface plasmon (SP) at this boundary. We investigate the angular dependence of the SH generation from the polyurethane coated grating. The excitation of the electromagnetic resonances at the pump frequency lead to a large increase of the diffracted SH light intensity. In order to study the wavelength dependence of the SH efficiency, we have employed two pump wavelengths 1064 nm and 1318 nm. For the shorter wavelength pump, the SH falls within the absorption band of the polymer.

Document Details

Document Type
Technical Report
Publication Date
May 22, 1992
Accession Number
ADP007553

Entities

People

  • G. Vitrant
  • J. L. Coutaz
  • M. Kull
  • R. Reinisch

Organizations

  • Royal Institute of Technology

Tags

DTIC Thesaurus Topics

  • Absorption
  • Boundaries
  • Demographic Cohorts
  • Efficiency
  • Excitation
  • Frequency
  • Intensity
  • Motion
  • Polyurethanes
  • Resonance
  • Second Harmonic Generation
  • Surface Plasmons
  • United Kingdom
  • Wave Phenomena
  • Waveguides

Fields of Study

  • Physics

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Optical Physics and Photonics.
  • Surface Coatings Technology.