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Title: Photovoltaic effect in Bi{sub 2}TeO{sub 5} photorefractive crystal

We report on the presence of a strong photovoltaic effect on nominally undoped photorefractive Bi{sub 2}TeO{sub 5} crystals and estimated their Glass photovoltaic constant and photovoltaic field for λ = 532 nm illumination. We directly measured the photovoltaic-based photocurrent in this material under λ = 532 nm wavelength laser light illumination and compared its behavior with that of a well known photovoltaic Fe-doped Lithium Niobate crystal. We also show the photovoltaic current to strongly depend on the polarization direction of light. Holographic diffraction efficiency oscillation during recording and the behavior of fringe-locked running holograms in self-stabilized experiments are also demonstrated here as additional indirect proofs of the photovoltaic nature of this material.
Authors:
;  [1] ; ; ;  [2] ;  [3]
  1. GOMNI-Faculdade de Tecnologia/UNICAMP, Limeira (Brazil)
  2. Instituto de Física/Universidade Federal de Goiás, Goiânia (Brazil)
  3. Instituto de Física “Gleb Wataghin”/UNICAMP, Campinas (Brazil)
Publication Date:
OSTI Identifier:
22482240
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 107; Journal Issue: 15; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; COMPARATIVE EVALUATIONS; CRYSTALS; CURRENTS; DIFFRACTION; DOPED MATERIALS; EFFICIENCY; HOLOGRAPHY; ILLUMINANCE; LASERS; LITHIUM; NIOBATES; OSCILLATIONS; PHOTOVOLTAIC EFFECT; POLARIZATION; WAVELENGTHS