Accession Number : ADP007553

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

Corporate Author : ROYAL INST OF TECH STOCKHOLM (SWEDEN) DEPT OF PHYSICS

Personal Author(s) : Kull, M. ; Coutaz, J. L. ; Vitrant, G. ; Reinisch, R.

Report Date : 22 MAY 1992

Pagination or Media Count : 4

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.

Descriptors :   *WAVEGUIDE COUPLERS, *OPTICAL WAVEGUIDES, ABSORPTION, ADDITION, BOUNDARIES, EFFICIENCY, EXCITATION, INTENSITY, LIGHT, METALS, POLYMERS, PUMPS, SILVER, SURFACES, SYMPOSIA, FRANCE, ELECTROOPTICS, GRATINGS(SPECTRA), METAL COATINGS.

Subject Categories : Optics
      Electrooptical and Optoelectronic Devices

Distribution Statement : APPROVED FOR PUBLIC RELEASE