Accession Number : ADA293017

Title :   Laser-Induced Holographic Surface Relief Gratings on Nonlinear Optical Polymer Films.

Descriptive Note : Technical rept. 1 Oct 94-30 Sep 95,

Corporate Author : MASSACHUSETTS UNIV LOWELL DEPT OF CHEMISTRY

Personal Author(s) : Kim, D. Y. ; Li, L. ; Kumar, J. ; Tripathy, S. K.

PDF Url : ADA293017

Report Date : 30 MAR 1995

Pagination or Media Count : 13

Abstract : We report observation of holographic surface relief gratings with relatively large amplitude on a second order nonlinear optical polymeric material. Surface relief gratings on these polymer films were created upon exposure to polarized Ar+ laser beams at 488 nm without any subsequent processing steps. The surface structure of the relief gratings was investigated by atomic force microscopy. The depth of the surface relief in a typical case was 140 nm which is approximately 25% of the original film thickness. Diffraction efficiency of gold coated gratings were investigated as a function of wavelength and capability of recording orthogonal gratings on the same film was demonstrated.

Descriptors :   *GRATINGS(SPECTRA), THICKNESS, OBSERVATION, REPORTS, OPTICAL MATERIALS, LASER BEAMS, ETCHING, DEPTH, SURFACES, HOLOGRAPHY, NONLINEAR SYSTEMS, DIFFRACTION, POLYMERIC FILMS, GOLD, OPTICAL COATINGS, AMPLITUDE, ORTHOGONALITY.

Subject Categories : Optics
      Holography

Distribution Statement : APPROVED FOR PUBLIC RELEASE