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公开(公告)号：US20200280174A1
公开(公告)日：2020-09-03
申请号：US16804442
申请日：2020-02-28
Inventor： Duhyun LEE , Muhammad ALAM , Ghazaleh KAFAIE SHIRMANESH , Harry ATWATER , Pin Chieh WU , Ragip PALA
Abstract: A light modulation element according to example embodiments includes a substrate; a first lower DBR layer on the substrate including a first material layer alternately stacked with a second material layer having a different refractive index from the first material layer; a second lower DBR layer on the first lower DBR layer with a surface area less than the first lower DBR layer and including a third material layer alternately stacked with a fourth material layer having a different refractive index from the third material layer; an active layer on the second lower DBR layer, including a semiconductor material having a multi-quantum well structure and having a refractive index that varies according to an applied voltage; and an upper DBR layer on the active layer including a fifth material layer alternately stacked with a sixth material layer having a different refractive index from the fifth material layer.
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公开(公告)号：US20190079321A1
公开(公告)日：2019-03-14
申请号：US16124948
申请日：2018-09-07
Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY
Inventor： Pin Chieh WU , Ruzan SOKHOYAN , Ghazaleh KAFAIE SHIRMANESH , Harry A. ATWATER
CPC classification number: G02F1/0136 , G02F1/0147 , G02F1/0551 , G02F1/0555 , G02F2202/101 , G02F2202/102 , G02F2202/30
Abstract: The optical response of a metasurface is controlled by actuating it via an electrical or magnetic field, temperature control, optical pumping or electromechanical actuation. The metasurface will therefore control the polarization of the incident light. The metasurface comprises an array of patch antennas. The patch antennas are in the form of asymmetrical elements, including rotated rods, cross-shapes, V-shapes, and L-shapes.
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