Polarization-independent ultrasonic modulation of light in gyrotropic cubic bismuth germanate crystals

摘要

An intermediate regime of light diffraction by ultrasound propagating along the [001] and [1{up}-10] axes of a gyrotropic cubic bismuth germanate crystal is investigated. The possibility of polarization-independent light modulation in the intermediate regime of diffraction close to the Bragg regime is shown. The dependences of the diffraction efficiency on the incident light polarization azimuth at different ultrasonic wave intensities are given.