Novel tunable graphene-based metasurface of metalens

Dual-band perfect absorption graphene metasurface with high modulation in near-infrared

“…By designing the geometry, placement and arrangement of its components, the metasurface can flexibly control the amplitude, phase, polarization state, angular momentum and dispersion of the incident light [6,7]. Among all these tuning mechanisms, graphene has attracted much attention due to its optical properties as a unique two-dimensional material [8], including its ability to absorb incident light over a broad wavelength range [9], tuning capability in the infrared and terahertz bands [10], and phase tuning capability in metasurfaces [11][12][13][14]. Its electrical tuning ability with fast tuning speed, high modulation range, and better integration with silicon manufacturing, shows great potential in many applications [15][16][17][18].…”

A Review on Reconfigurable Metalenses Revolutionizing Flat Optics

“…Ultimately, the choice between tunable and non-tunable MLs hinges on the specific needs of the intended application, encompassing considerations such as efficiency, bandwidth, fabrication intricacy, and adaptability to dynamic conditions. [43] The paper is particularly structured as follows: In Section 2, we delve into the fundamental principles underlying MLs, exploring their design considerations and the intricate workings that drive their functionality. Section 3 provides a comprehensive insight into the disparities between MLs and standard diffractive lenses (SDLs), shedding light on the unique characteristics and advantages MLs offer.…”

“…Ultimately, the choice between tunable and non‐tunable MLs hinges on the specific needs of the intended application, encompassing considerations such as efficiency, bandwidth, fabrication intricacy, and adaptability to dynamic conditions. [ 43 ]…”