Poled polymer thin-film gratings studied by near-field second harmonic optical microscopy and far-field optical diffraction

R. D. Schaller, R. J. Saykally, Y. R. Shen, F. Lagugné-Labarthet

Research output: Contribution to journalConference article

2 Citations (Scopus)

Abstract

Electrical poling induces polar ordering of molecules in a grating that has been holographically inscribed on a thin film of polymer functionalized with azobenzene side chains. Depending on the surface relief amplitude, the resulting χ(2) grating, seen by second harmonic generation (SHG) near-field scanning optical microscopy (NSOM), can have a periodic structure significantly different from the topographical image. The far-field linear and SHG diffraction patterns correlate well with the grating structures. Poling of the thin-film grating, which presumably has photo-driven non-uniform material properties within each period, leads to the more complex structure of the χ(2) grating.

Original languageEnglish
Pages (from-to)305-312
Number of pages8
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume4991
DOIs
Publication statusPublished - Nov 27 2003
EventPROCEEDINGS OF SPIE SPIE - The International Society for Optical Engineering: Organic Photonic Materials and Devices V - San Jose, CA, United States
Duration: Jan 27 2003Jan 30 2003

Keywords

  • Azopolymers
  • Diffraction
  • Near-field optical microscopy
  • Nonlinear optical gratings

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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