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Direct observation of orientation limit in a fast photorefractive polymer composite

  • J. A. Herlocker
  • , K. B. Ferrio
  • , E. Hendrickx
  • , B. D. Guenther
  • , S. Mery
  • , B. Kippelen
  • , N. Peyghambarian

Research output: Contribution to journalArticlepeer-review

Abstract

The photorefractivity and chromophore orientation in polymer composites were studied. The composites were made from poly-N-vinylcarbazole, N-ethylcarbazole, and (2,4,7-trinitro-9-fluorenylidene)malonodinitrile with a fluorinated cyano-tolane chromophore. The transient photorefractive response in four-wave mixing (FWM) and two-beam coupling (TBC) was measured. Transient FWM revealed a photorefractive response dominated by a fast time constant of 4 ms, while transient ellipsometry revealed an orientational response of only 490 μs.

Original languageEnglish (US)
Pages (from-to)2253-2255
Number of pages3
JournalApplied Physics Letters
Volume74
Issue number16
DOIs
StatePublished - Apr 19 1999

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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