Enhanced gain dynamics in photorefractive polymers

C. M. Liebig, S. Basun, S. S. Buller, D. R. Evans, P. P. Banerjee, P. A. Blanche, C. W. Christensen, N. Peyghambarian, J. Thomas

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The complexity of photorefractive polymers arises from multiple contributions to the photo-induced index grating. Analysis of the time dynamics of the two-beam coupling signal is used to extract information about the charge species responsible for the grating formation. It has been shown in a commonly used photorefractive polymer at moderate applied electric fields, the primary charge carriers (holes) establish an initial grating which, however, are followed by a subsequent competing grating (electrons) that decreases the two-beam coupling efficiency. We show by upon using higher applied bias fields, gain enhancement can be achieved by eliminating the electron grating contribution and returning to hole gratings only.

Original languageEnglish (US)
Title of host publicationPhotonic Fiber and Crystal Devices
Subtitle of host publicationAdvances in Materials and Innovations in Device Applications VII
PublisherSPIE
ISBN (Print)9780819496973
DOIs
StatePublished - Jan 1 2013
EventConference on Photonic Fibers and Crystal Devices: Advances in Materials and Innovations in Device Applications VII - San Diego, CA, United States
Duration: Aug 25 2013Aug 26 2013

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8847
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

OtherConference on Photonic Fibers and Crystal Devices: Advances in Materials and Innovations in Device Applications VII
CountryUnited States
CitySan Diego, CA
Period8/25/138/26/13

Keywords

  • Photorefractives
  • Polymers
  • Two-beam coupling

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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