Circular polarization converter based on gold rod and gold hole array composite structure

The invention discloses an intermediate infrared polarization converter based on a gold rod and gold hole array composite structure. The intermediate infrared polarization converter is composed of a silicon dioxide substrate and an upper-layer gold rod-honeycomb gold hole array composite metasurface...

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Hauptverfasser: LAI ZIFAN, ZHOU SITONG, YANG HONGYAN, XIAO GONGLI, WANG-YANG PEIHUA, CHEN YONGHE, DENG YANRONG, CHEN ZANHUI, CHEN JIAYU, SUN TANGYOU, ZHANG FABI, LIU XINGPENG, LI HAI'OU
Format: Patent
Sprache:chi ; eng
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Zusammenfassung:The invention discloses an intermediate infrared polarization converter based on a gold rod and gold hole array composite structure. The intermediate infrared polarization converter is composed of a silicon dioxide substrate and an upper-layer gold rod-honeycomb gold hole array composite metasurface structure. According to the invention, the conversion between linear polarization and circularly polarized light and between circularly polarized light and circularly polarized light can be realized, and the polarization conversion rate (PCR) is high, so that a reliable result is provided for the design of a high-performance polarization control device; in addition, some laws about the rotation angle (theta) of the gold rod and chirality are found, and some methods are provided for the design of chiral sensing. The novel structural design and excellent performance are expected to be widely applied to the design of the micro-nano polarization control device in the future. 本发明公开了基于金棒和金孔阵列复合结构的中红外偏振转换器,由二氧化硅衬底和上层金棒-蜂