Abstract

A method is proposed for the formation of two-color optical radiation with a rotating polarization vector, the rotation frequency of which is determined by the acoustic frequency. The method is based on acousto-optic (AO) diffraction of two-color radiation by an acoustic wave and the interference of circularly polarized beams with different frequencies. The rotation of polarization of two-color radiation is experimentally demonstrated for wavelengths of 0.488 × 10^–4 and 0.514 × 10^–4 cm using two AO Bragg cells made of a gyrotropic TeO₂ crystal. Polarization rotation with a frequency of about 109 MHz is obtained.

中文翻译：

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偏振面受控旋转形成双色辐射

摘要

提出了一种形成具有旋转偏振矢量的双色光辐射的方法，其旋转频率由声频确定。该方法基于声波对双色辐射的声光 (AO) 衍射和不同频率的圆偏振光束的干涉。使用由回旋性TeO ₂晶体制成的两个 AO 布拉格电池，在 0.488 × 10 ^–4和 0.514 × 10 ^–4 cm的波长下实验证明了双色辐射的偏振旋转。获得频率约为 109 MHz 的偏振旋转。