Accession Number:

ADA588698

Title:

Time-Resolved Studies of Photoinduced Birefringence in Azobenzene Dye-Doped Polymer Films

Descriptive Note:

Journal article

Corporate Author:

UNIVERSITY OF CENTRAL FLORIDA ORLANDO

Report Date:

2008-09-23

Pagination or Media Count:

7.0

Abstract:

We measured transient photoinduced birefringence delta n in various azobenzene dye films by pumping with a nanosecond pulse at 532nm and probing at 633 nm. The switch-on times for the photoinduced birefringence range from nanoseconds to milliseconds and are systematically related with the lowest optical transition energies for those films. Moreover, our results suggest that the transient photoinduced birefringence measurement is a convenient way to determine the relative energies of pi-pi and n-pi states in azo-based materials.

Subject Categories:

  • Organic Chemistry
  • Coatings, Colorants and Finishes
  • Plastics
  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE