A Relaxation Study of Poled Nonlinear Optical Polymers by Infrared Reflection-Absorption Spectroscopy.

Abstract

The relaxation of poled nonlinear optical (NLO) chromophores in polymer films was characterized by infrared reflection-absorption spectroscopy. Both a guest-host system and a photo-crosslinkable polymer system were investigated. Polymethylmethacrylate doped with either 2-methyl-4-nitroaniline or 4(4'-nitrophenylazo)aniline was studied. The photo-crosslinkable polymer system, polyvinylcinnamate doped with 3-cinnamoyloxy-4-(4-(N,N-diethylamino)-2- cinnamoyloxy phenyl azo)nitrobenzene was also investigated. Doped NLO active molecules were aligned using the corona poling technique. Infrared spectra as a function of time were used to monitor the relaxation behavior of the oriented dyes after poling. Relaxation of NLO molecules was followed at various characteristic vibrational frequencies. The relaxation behavior of both systems were found to be consistent with those studied by the second harmonic generation technique. Relaxation, Nonlinear optical polymers, Infrared.

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Document Details

Document Type
Technical Report
Publication Date
Mar 14, 1994
Accession Number
ADA277513

Entities

People

  • Jayant Ram Kumar
  • Jeng I. Chen
  • Sukany K. Tripathy
  • Sutiyao Marturunkakul
  • Y. M. Chen

Organizations

  • University of Massachusetts Lowell

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Advanced Materials
  • Aluminum
  • Chemistry
  • Electric Fields
  • Frequency
  • Glass
  • Infrared Spectra
  • Macromolecules
  • Massachusetts
  • Materials
  • Polymeric Films
  • Polymers
  • Radiation
  • Second Harmonic Generation
  • Spectra
  • Spectroscopy
  • United States

Fields of Study

  • Chemistry
  • Materials science

Readers

  • Materials Science and Engineering.
  • Organic Chemistry