The beam splitter is one of the most crucial components in optical and electromagnetic systems,and it is also expected to be applied in terahertz(THz)technology.However,most existing beam splitters operate in only a s...The beam splitter is one of the most crucial components in optical and electromagnetic systems,and it is also expected to be applied in terahertz(THz)technology.However,most existing beam splitters operate in only a single working mode,restricting their applications.This paper reports a method for the inverse design of a doublet meta-device consisting of two stacked metasurfaces functioning as a reconfigurable THz beam splitter.It is made of photo-curable high-temperature resin using 3D printing technology.By simply adjusting the relative rotation angles between the two metasurfaces to 0°,90°,180°,and 270°,the meta-device can produce four distinct focal patterns,thus achieving four different working modes.This scheme avoids introducing complicated active components,offering a simple,low-cost design of a signal divider in future 6G THz communication systems.展开更多
基金National Natural Science Foundation of China(62231001)Hong Kong Research Grants Council Collaborative Research Fund(C1009-22G)。
文摘The beam splitter is one of the most crucial components in optical and electromagnetic systems,and it is also expected to be applied in terahertz(THz)technology.However,most existing beam splitters operate in only a single working mode,restricting their applications.This paper reports a method for the inverse design of a doublet meta-device consisting of two stacked metasurfaces functioning as a reconfigurable THz beam splitter.It is made of photo-curable high-temperature resin using 3D printing technology.By simply adjusting the relative rotation angles between the two metasurfaces to 0°,90°,180°,and 270°,the meta-device can produce four distinct focal patterns,thus achieving four different working modes.This scheme avoids introducing complicated active components,offering a simple,low-cost design of a signal divider in future 6G THz communication systems.
