Nonresonant enhancement of the nonsteady-state holographic currents in photoconductive crystals

In this paper, we report on nonresonant excitation holographic currents in an external sinusoidal electric field with frequency /spl Omega/. We have obtained general expression for the nonsteady-state photocurrent amplitude excited in an AC electric field. Dependence of the nonsteady-state photocurr...

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Bibliographic Details
Published in2003 Conference on Lasers and Electro-Optics Europe (CLEO/Europe 2003) (IEEE Cat. No.03TH8666) p. 303
Main Authors Bryushinin, M.A., Kulikov, V.V., Sokolov, I.A.
Format Conference Proceeding
LanguageEnglish
Published IEEE 2003
Subjects
Chirp modulation
Crystals
Cutoff frequency
Electric fields
Frequency measurement
Frequency modulation
Genetic expression
Holography
Phase modulation
Photoconductivity
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Summary:In this paper, we report on nonresonant excitation holographic currents in an external sinusoidal electric field with frequency /spl Omega/. We have obtained general expression for the nonsteady-state photocurrent amplitude excited in an AC electric field. Dependence of the nonsteady-state photocurrent amplitude versus the frequency of phase modulation /spl omega/ was measured in n-type photorefractive Bi/sub 12/SiO/sub 20/ crystal. We observed linear growth of the signal for low modulation frequencies up to a certain characteristic cut-off frequency and frequency-independent region for high modulation frequencies.
ISBN:0780377346
9780780377349
DOI:10.1109/CLEOE.2003.1312364