Volume 137, Number 2, January 2022
|Number of page(s)||4|
|Section||Condensed Matter: Structural, Mechanical and Thermal Properties|
|Published online||11 April 2022|
Three modes of the nonstationary holographic current excitation in a gallium oxide crystal
1 Ioffe Institute - St. Petersburg, Russia
2 Institute of Automation and Control Processes FEB RAS - Vladivostok, Russia
Received: 3 December 2021
Accepted: 4 January 2022
We report the nonstationary holographic current excitation in a β-Ga2O3 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.
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