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

Author

Bryushinin, Mikhail A. ; Kulikov, Vladimir V. ; Sokolov, Igor A.

Author_Institution

A.F. Ioffe Phys. Tech. Inst., Russian Acad. of Sci., St. Petersburg, Russia

fYear

2003

fDate

22-27 June 2003

Firstpage

303

Abstract

In this paper, we report on nonresonant excitation holographic currents in an external sinusoidal electric field with frequency Ω. 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 ω was measured in n-type photorefractive Bi₁₂SiO₂₀ 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.

Keywords

bismuth compounds; frequency measurement; optical modulation; phase modulation; photoconducting materials; photorefractive materials; photovoltaic effects; Bi₁₂SiO₂₀; external sinusoidal electric field; frequency measurement; n-type photorefractive Bi₁₂SiO₂₀ crystal; nonresonant enhancement; nonresonant excitation; nonsteady-state holographic currents; phase modulation; photoconductive crystals; Chirp modulation; Crystals; Cutoff frequency; Electric fields; Frequency measurement; Frequency modulation; Genetic expression; Holography; Phase modulation; Photoconductivity;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics Europe, 2003. CLEO/Europe. 2003 Conference on

Print_ISBN

0-7803-7734-6

Type

conf

DOI

10.1109/CLEOE.2003.1312364

Filename

1312364