摘要
从超构表面调控电磁波研究的发展历史出发,详细介绍了基于复合相位超构表面实现高效多功能调控圆偏振电磁波的原理、设计思路和实验模拟表征,对近期国内外在这一领域的研究进展进行简要的论述,着力以此引导相关研究性实验教学,并为相关领域研究人员提供指引。
Significance Multifunctional integrated devices have become the mainstream of nanophononics research in recent years as optical devices continue to evolve towards high capacity,multichannel,low loss and integration.Additionally,the arbitrary manipulation of circularly polarized(CP)electromagnetic(EM)waves is significant for a wide range of applications such as chiral molecule manipulation,imaging,and optical communication.However,conventional optical devices composed of natural materials cannot realize multiplexing with only one optical device because they rely on the body properties to change the propagation phase so as to modulate electromagnetic waves.As a result,conventional optical devices are not conducive to the diversification,integration,miniaturization,and efficiency improvement of optical devices due to the single function,system complexity,large size,and low efficiency.Progress In recent years,metasurfaces consisting of a series of ultra-thin subwavelength artificial atoms arranged in a specific manner in the plane have demonstrated powerful modulation of electromagnetic waves,providing a good platform for realizing multifunctional integration.Researchers have discovered a series of exotic physical phenomena and powerful planar optical devices by exploiting the advantages of metasurfaces,such as lightness and thinness,large degree of modulation freedom,low loss,and easy conformality and integration.The mechanisms for modulating the phase of EM waves based on metasurfaces can be classified into three main types including resonant phase,geometric phase,and propagation phase.The resonant phase modulation mechanism is usually achieved by changing the geometry of the constituent artificial atoms to shift their resonant frequencies under arbitrarily polarized incident light.The propagation phase is realized by accumulating the phase of an EM wave as it propagates within the artificial atoms of the medium.The geometric phase is achieved by rotating the artificial atoms to change the phase of the outgoing lig
作者
王卓
何琼
孙树林
周磊
Wang Zhuo;He Qiong;Sun Shulin;Zhou Lei(Department of Physics,State Key Laboratory of Surface Physics,Shanghai Key Laboratory of Metasurface Light Field Manipulation,Fudan University,Shanghai 200433,China;Shanghai Engineering Research Center of Ultra-Precision Optical Manufacturing,Department of Optical Science and Engineering,Fudan University,Shanghai 200433,China)
出处
《光学学报》
EI
CAS
CSCD
北大核心
2024年第10期139-150,共12页
Acta Optica Sinica
基金
国家重点研发计划(2020YFA0710100,2022YFA1404700)
国家自然科学基金面上项目(12374344)
中国博士后科学基金(2021TQ0077)。
关键词
超构表面
共振相位
传输相位
几何相位
复合相位
圆偏振光
多功能
metasurfaces
resonance phase
propagation phase
geometric phase
composite phase
circularly polarized light
multifunction
