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首页> 外文期刊>Bulletin of the American Physical Society >APS -2017 Annual Fall Meeting of the APS Ohio-Region Section - Event - Voltage-Control of Millimeter-Wave Polarization Rotation from Magnetoelastic Membranes
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APS -2017 Annual Fall Meeting of the APS Ohio-Region Section - Event - Voltage-Control of Millimeter-Wave Polarization Rotation from Magnetoelastic Membranes

机译：APS -2017 APS俄亥俄州地区分部年度秋季会议-事件-磁弹性膜的毫米波极化旋转的电压控制

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摘要

Rotation of the linear polarization angle of millimeter-wave Gaussian beams (with frequencies centered around 61.25 GHz) has been observed from 30 micrometer thick membranes of silicone rubber infused with micrometer-scale nickel particles. The membranes were stretched across and fixed to piezoelectric ceramic annuli with a silicone-based adhesive. Applying a low-frequency AC voltage across the thickness of an annulus resulted in the excitation of a radial resonance, which in-turn caused the magnetoelastic membrane to expand and contract in the radial direction. We isolated the influence of nickel particle density modulation on rotation of linear polarization using a lock-in detection technique. We found that the amount of rotation scaled linearly with the amplitude of the low-frequency AC voltage signal. Efforts are currently underway to distinguish reciprocal rotation due to birefringence from non-reciprocal rotation due to the Faraday effect.
机译：从注入了微米级镍颗粒的30微米厚的硅橡胶膜中，可以观察到毫米波高斯光束（频率集中在61.25 GHz附近）的线性偏振角的旋转。将膜拉伸并用有机硅基粘合剂固定在压电陶瓷环上。在环形空间的整个厚度上施加低频交流电压会导致径向共振的激发，进而引起磁弹性膜在径向方向上膨胀和收缩。我们使用锁定检测技术隔离了镍粒子密度调制对线性极化旋转的影响。我们发现旋转量与低频交流电压信号的幅度成线性比例。目前正在努力区分由于双折射引起的往复旋转与由于法拉第效应引起的非往复旋转。

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