Electric-field stabilization and competition of gratings in a photorefractive polymer

Stephen Ducharme, James M Takacs, Lei Zhang, Brian Jones

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

We report observations of electric-field stabilization of gratings and grating competition in a new photorefractive polymer mixture composed of 40 wt. % diethylamino-benzaldehyde-diphenyl hydrazone dissolved in Bisphenol A 4,4′-nitroaminotolane. Gratings formed with a 650-nm optical wavelength in 145-μm-thick films at 138-kV/cm bias field have a diffraction efficiency as high as 0.11%, require an energy density of −1 J/cm2 for formation, and show cancellation, revelation, and electric-field-stabilized persistence. We propose a model in which fast recording is associated with one set of photosensitive traps, whereas a slower cancellation and subsequent revelation are associated with a competing grating formed in a set of insensitive shallow traps. The model also accounts for observed fatigue of the photoconductivity.

Original languageEnglish (US)
Pages (from-to)152-154
Number of pages3
JournalOptics Letters
Volume18
Issue number2
DOIs
StatePublished - Jan 15 1993

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stabilization
gratings
electric fields
polymers
cancellation
traps
hydrazones
bisphenols
photoconductivity
thick films
flux density
recording
diffraction
wavelengths

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Electric-field stabilization and competition of gratings in a photorefractive polymer. / Ducharme, Stephen; Takacs, James M; Zhang, Lei; Jones, Brian.

In: Optics Letters, Vol. 18, No. 2, 15.01.1993, p. 152-154.

Research output: Contribution to journalArticle

Ducharme, Stephen ; Takacs, James M ; Zhang, Lei ; Jones, Brian. / Electric-field stabilization and competition of gratings in a photorefractive polymer. In: Optics Letters. 1993 ; Vol. 18, No. 2. pp. 152-154.
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