Three modes of the nonstationary holographic current excitation in a gallium oxide crystal

We report the nonstationary holographic current excitation in a β -Ga 2 O 3 crystal at light wavelength . The material demonstrates insulating properties and high transparency for visible light, but this, however, does not prevent the dynamic space-charge grating formation and the holographic curren...

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Bibliographic Details
Published in:Europhysics letters 2022-01, Vol.137 (2), p.26002
Main Authors: Bryushinin, M. A., Kulikov, V. V., Petrov, A. A., Sokolov, I. A., Romashko, R. V., Kulchin, Yu. N.
Format: Article
Language:English
Subjects:
Diffusion length
Electric fields
Excitation
Gallium oxides
Holography
Phase modulation
Photoconductivity
Photoelectricity
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Summary:We report the nonstationary holographic current excitation in a β -Ga 2 O 3 crystal at light wavelength . The material demonstrates insulating properties and high transparency for visible light, but this, however, does not prevent the dynamic space-charge grating formation and the holographic current observation for various external electric fields —zero, dc and ac ones. The signal amplitude is measured and analyzed vs. the frequency of phase modulation, spatial frequency and electric field value. The main photoelectric parameters such as specific photoconductivity, sensor responsivity and diffusion length of carriers are determined for the blue region of spectrum.
ISSN:0295-5075
1286-4854
DOI:10.1209/0295-5075/ac47f5