Dielectric metasurfaces hold an exceptional potential for the next generation of tunable optical systems that find applications in sensing, ranging, and imaging. Here, we introduce and demonstrate magnetic field tuning of dielectric metasurfaces infiltrated with liquid crystals. To illustrate this concept, we show how the reorientation of liquid crystal induced by the magnetic field changes the spectrum of the resonant dielectric metasurface. This new magnetic-field tuning approach offers significant advantages over other liquid crystal tuning methods since it does not require pre-alignment or the fabrication of structured electrodes, which are both challenging when dealing with metasurfaces. Furthermore, there are no strict limitations on the thickness of liquid crystal cells. Importantly, our approach allows for gradual tuning of the resonances by changing the magnetic-field orientation and, thereby, shows good promise for highly tunable optical metadevices.

中文翻译：

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液晶介电超表面的磁调谐

介电超表面对于下一代可调谐光学系统具有非凡的潜力，可在传感、测距和成像中找到应用。在这里，我们介绍并演示了用液晶渗透的介电超表面的磁场调谐。为了说明这个概念，我们展示了由磁场引起的液晶重新定向如何改变谐振介电超表面的光谱。这种新的磁场调谐方法与其他液晶调谐方法相比具有显着优势，因为它不需要预对准或结构化电极的制造，这在处理超表面时都具有挑战性。此外，对液晶盒的厚度没有严格的限制。重要的，