Electro-Optics and Second Harmonic Generation of Nonlinear Optical Polymers

Abstract

The susceptibilities for second harmonic generation (SHG)x31(2) x33(2) of a new high tg polymer, 1,2-benzyl-1,2-cyclohexy l-bridged syndioregic a-cyanocinncimamide (BCSCCA) have been measured by using a Maker fringe apparatus. The BCSCCA was spin coated on a quartz substrate. The film of about 1 um thickness has shown a large birefringence before poling, thus indicating molecular alignment due to spin coating. The polar order was induced by poling the film at 215 C with the corona discharge. The SHG coefficients d33 is equal to 3.54 pm/V and dl3 = 0.95 pm/V at 532 nm. The d-coefficients are stable and show negligible decay over one month. The SHG intensities at 532, 528, 476, 403, 366 mn are also observed. A large resonance enhancement in the SHG intensity was observed inside the absorption band.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1992
Accession Number
ADA252488

Entities

People

  • C. H. Wang
  • H. W. Guan

Organizations

  • University of Nebraska-Lincoln Department of Chemistry

Tags

Communities of Interest

  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Absorption
  • Coatings
  • Electric Fields
  • Glass
  • Glass Transition Temperature
  • Intensity
  • Materials
  • Measurement
  • Military Research
  • Polymeric Films
  • Polymers
  • Refractive Index
  • Second Harmonic Generation
  • Spin Coatings
  • Substrates
  • Thickness
  • Transition Temperature

Fields of Study

  • Physics

Readers

  • Gender and Food Studies
  • Optical Physics and Photonics.
  • Polymer Science and Technology