首页|Terahertz wide-angle metalens with nearly ideal object-image relation

Terahertz wide-angle metalens with nearly ideal object-image relation

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Metalenses are essential components in terahertz imaging systems.However,without careful design,they show limited field of view and their practical applications are hindered.Here,a wide-angle metalens is proposed whose structure is optimized for focusing within the incident angles of±25°.Simulation and experiment results show that the focusing effi-ciency,spot size,and modulation transfer function of this lens are not sensitive to the incident angle.More importantly,this wide-angle metalens follows the ideal Gaussian formula for the object-image relation,which ensures a wider field of view and better contrast in the imaging experiment.

terahertzmetalenswide-angleGaussian formula

王宇、程洁嵘、冀允允、范飞、常胜江

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Institute of Modern Optics,Nankai University,Tianjin 300350,China

Tianjin Key Laboratory of Micro-scale Optical Information Science and Technology,Tianjin 300350,China

Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology,Tianjin 300350,China

2024

10.3788/COL202422.013701

中国光学快报(英文版)
中国光学学会 中国科学院上海光学精密机械研究所

中国光学快报(英文版)

CSTPCD
影响因子：1.305
ISSN：1671-7694
年,卷(期)：2024.22(1)
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