Electric-Driven Polarization Meta-Optics for Tunable Edge-Enhanced Images

Cheng, Cheng; Ou, Kai; Yang, Hui; Wan, Hengyi; Wei, Zeyong; Wang, Zhanshan; Cheng, Xinbin

doi:10.3390/mi13040541

Cited by 6 publications

(4 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As shown in Figure 9 e, researchers proposed a polarization-controlled broadband achromatic vortex-focused metalens which can implement full-color edge-enhanced imaging and bright imaging with high efficiency [ 158 ]. In addition, the LC-based electric-driven polarization meta-optics paradigm has been demonstrated for tunable edge-enhanced images [ 211 ]. In a strict sense, all light beams have structure jointly defined by their polarization pattern, phase profile, and intensity distribution.…”

Section: Applicationsmentioning

confidence: 99%

Advances in Meta-Optics and Metasurfaces: Fundamentals and Applications

Wan

Wang

et al. 2023

Nanomaterials

Self Cite

View full text Add to dashboard Cite

Meta-optics based on metasurfaces that interact strongly with light has been an active area of research in recent years. The development of meta-optics has always been driven by human’s pursuits of the ultimate miniaturization of optical elements, on-demand design and control of light beams, and processing hidden modalities of light. Underpinned by meta-optical physics, meta-optical devices have produced potentially disruptive applications in light manipulation and ultra-light optics. Among them, optical metalens are most fundamental and prominent meta-devices, owing to their powerful abilities in advanced imaging and image processing, and their novel functionalities in light manipulation. This review focuses on recent advances in the fundamentals and applications of the field defined by excavating new optical physics and breaking the limitations of light manipulation. In addition, we have deeply explored the metalenses and metalens-based devices with novel functionalities, and their applications in computational imaging and image processing. We also provide an outlook on this active field in the end.

show abstract

Section: Applicationsmentioning

confidence: 99%

Advances in Meta-Optics and Metasurfaces: Fundamentals and Applications

Wan

Wang

et al. 2023

Nanomaterials

Self Cite

View full text Add to dashboard Cite

show abstract

“…[27,28,[33][34][35] These optical vortices hold great promise in applications such as optical manipulation, lightmatter interactions, and quantum optics. [36] Researchers have demonstrated reconfigurable analogue optical signal processors by utilizing the tunability of phase-change materials, [21,[37][38][39] mechanical elements, [40] humidity-sensitive hydrogel, [41] liquid crystals, [42][43][44] and graphene structures. [26] However, most of these works have focused on implementing tunable optical signal processing in either the spatial domain [38][39][40][41][42][43] or temporal domain.…”

Section: Doi: 101002/adom202300746mentioning

confidence: 99%

“…[36] Researchers have demonstrated reconfigurable analogue optical signal processors by utilizing the tunability of phase-change materials, [21,[37][38][39] mechanical elements, [40] humidity-sensitive hydrogel, [41] liquid crystals, [42][43][44] and graphene structures. [26] However, most of these works have focused on implementing tunable optical signal processing in either the spatial domain [38][39][40][41][42][43] or temporal domain. [21,37,44] The tunable spatiotemporal optical signal processors proposed by Momeni et al [26] face certain limitations due to the relatively low reproducibility and uniformity of graphene.…”

Section: Doi: 101002/adom202300746mentioning

confidence: 99%

Reconfigurable Spatiotemporal Optical Signal Processors

Zhou

Zhan

Shao

et al. 2023

Advanced Optical Materials

View full text Add to dashboard Cite

Analogue optical computing offers a promising approach for developing super‐fast computation techniques, benefiting from its extraordinary parallel processing capability, low energy consumption, and high integrability compared to digital electronic technologies. In this work, a reconfigurable spatiotemporal optical signal processor using the phase‐change material vanadium dioxide (VO2) to further expand the processing bandwidth and enrich the operation functions is demonstrated. As a specific example, a meta‐device is designed that can switch between a first‐order differentiator and a good reflector in the spatiotemporal domain by controlling the operation temperature. It is shown that the spatiotemporal transfer functions can be precisely engineered to meet the requirements for ideal first‐order differentiation and bright‐field imaging. This approach enables high‐accuracy spatial and temporal signal processing, as demonstrated by inspecting Gaussian signals. The theoretical evaluation determines the resolution limits of spatial and temporal edge detection. It also highlights that the device can perform spatiotemporal signal processing for pulses with complex profiles. The presented reconfigurable spatiotemporal optical signal processor holds great potential in applications such as remote sensing and fast imaging processing, among others.

show abstract

“…Optical metasurfaces represent two-dimensional artificial structured patterns comprising subwavelength meta-units with planar and easy integration nature [ 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 ]. These meta-structures proficiently and precisely manipulate multidimensional parameters of electromagnetic waves, including phase, amplitude, and polarization, enabling the tailored shaping of light waves at the subwavelength scale [ 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 ]. The multifunctional and integrated characteristics of meta-devices [ 29 , 30 ] bring unprecedented convenience to the development of ultra-compact optical systems, such as microfluidic chips [ 31 ], metasurface particle sorting [ 32 ], etc.…”

Section: Introductionmentioning

confidence: 99%

Multifunctional Meta-Devices for Full-Polarization Rotation and Focusing in the Near-Infrared

Wan,

Ou,

Yang

et al. 2024

Micromachines

Self Cite

View full text Add to dashboard Cite

The creation of multi-channel focused beams with arbitrary polarization states and their corresponding optical torques finds effective applications in the field of optical manipulation at the micro-nanoscale. The existing metasurface-based technologies for polarization rotation have made some progress, but they have been limited to single functions and have not yet achieved the generation of full polarization. In this work, we propose a multi-channel and spatial-multiplexing interference strategy for the generation of multi-channel focusing beams with arbitrary polarization rotation based on all-dielectric birefringent metasurfaces via simultaneously regulating the propagation phase and the geometric phase and independently controlling the wavefronts at different circular polarizations. For the proof of concept, we demonstrate highly efficient multi-channel polarization rotation meta-devices. The meta-devices demonstrate ultra-high polarization extinction ratios and high focusing efficiencies at each polarization channel. Our work provides a compact and versatile wavefront-shaping methodology for full-polarization control, paving a new path for planar multifunctional meta-optical devices in optical manipulation at micro–nano dimensions.

show abstract

Electric-Driven Polarization Meta-Optics for Tunable Edge-Enhanced Images

Cited by 6 publications

References 32 publications

Advances in Meta-Optics and Metasurfaces: Fundamentals and Applications

Advances in Meta-Optics and Metasurfaces: Fundamentals and Applications

Reconfigurable Spatiotemporal Optical Signal Processors

Multifunctional Meta-Devices for Full-Polarization Rotation and Focusing in the Near-Infrared

Contact Info

Product

Resources

About