Electrically controlled light focusing by a tunable metasurface using thin film lithium niobate

被引：0

作者：

Wang, Haoyu ^{[1
,2
]}

Li, Zhancheng ^{[1
,2
]}

Liu, Wenwei ^{[1
,2
]}

Zhang, Yuebian ^{[1
,2
]}

Cheng, Hua ^{[1
,2
]}

Chen, Shuqi ^{[1
,2
,3
,4
]}

机构：

[1] Nankai Univ, Sch Phys, Key Lab Weak Light Nonlinear Photon, Minist Educ, Tianjin 300071, Peoples R China

[2] Nankai Univ, TEDA Inst Appl Phys, Tianjin 300071, Peoples R China

[3] Nankai Univ, Smart Sensing Interdisciplinary Sci Ctr, Sch Mat Sci & Engn, Tianjin 300350, Peoples R China

[4] Shanxi Univ, Collaborat Innovat Ctr Extreme Opt, Taiyuan 030006, Peoples R China

来源：

CHINESE OPTICS LETTERS | 2024年 / 22卷 / 12期

基金：

中国国家自然科学基金;

关键词：

metasurface; thin film lithium niobate; electrically controlled light focusing; electro-optical Pockels effect; BAND ACHROMATIC METALENS;

D O I：

10.3788/COL202422.123601

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We theoretically demonstrate electrically controlled light focusing using a tunable metasurface employing thin film lithium niobate (TFLN). The designed metasurface features a high-quality factor guided-mode resonance with an electrically controllable resonant wavelength, resulting in a high extinction ratio of transmittance at the operational wavelength by changing the applied voltage. A reconfigurable one-dimensional Fresnel zone plate with a focusing efficiency of around 15% has been realized through spatial modulation of transmitted light intensity, whose focal position can be electrically tunable in both longitudinal and lateral directions. Our approach reveals the great potential of metasurfaces using TFLN for electrically controlled light focusing.

引用

页数：6

共 46 条

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