Imaging polarimetry through metasurface polarization gratings

Rubin, Noah A.; Chevalier, Paul; Juhl, Michael; Tamagnone, Michele; Chipman, Russell A.; Capasso, Federico

doi:10.1364/oe.450941

Cited by 58 publications

(31 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Such nano-photonic arrays are often called optical metasurfaces (OMS), owing to their display of optical properties beyond those typically found in nature. Examples of optical devices that have been demonstrated include innovative gratings, flat lenses, mirrors, advanced holograms, waveplates, polarizers, and spectral filters [ 3 , 9 , 10 , 11 , 12 , 13 , 14 ]. Following an exploratory phase of research typically conducted in university environments (resulting in more than ten thousand publications [ 15 ]), the technologies have started to migrate into industrial research with large multinational companies such as Samsung and ST Microelectronics running internal research [ 16 ] and even launching OMS products [ 17 ].…”

Section: Introductionmentioning

confidence: 99%

UV-Nanoimprint and Deep Reactive Ion Etching of High Efficiency Silicon Metalenses: High Throughput at Low Cost with Excellent Resolution and Repeatability

et al. 2023

View full text Add to dashboard Cite

As metasurfaces begin to find industrial applications there is a need to develop scalable and cost-effective fabrication techniques which offer sub-100nm resolution while providing high throughput and large area patterning. Here we demonstrate the use of UV-Nanoimprint Lithography and Deep Reactive Ion Etching (Bosch and Cryogenic) towards this goal. Robust processes are described for the fabrication of silicon rectangular pillars of high pattern fidelity. To demonstrate the quality of the structures, metasurface lenses, which demonstrate diffraction limited focusing and close to theoretical efficiency for NIR wavelengths λ ∈ (1.3 μm, 1.6 μm), are fabricated. We demonstrate a process which removes the characteristic sidewall surface roughness of the Bosch process, allowing for smooth 90-degree vertical sidewalls. We also demonstrate that the optical performance of the metasurface lenses is not affected adversely in the case of Bosch sidewall surface roughness with 45 nm indentations (or scallops). Next steps of development are defined for achieving full wafer coverage.

show abstract

Section: Introductionmentioning

confidence: 99%

UV-Nanoimprint and Deep Reactive Ion Etching of High Efficiency Silicon Metalenses: High Throughput at Low Cost with Excellent Resolution and Repeatability

et al. 2023

View full text Add to dashboard Cite

show abstract

“…These techniques are based on a variety of strategies such as the use of rotating wave plates, micropolarizers arrays, or division of amplitude elements [147]. Other techniques proposed more recently are based on the use of spatially varying birefringent elements [148] such as materials with stress-induced birefringence or metasurfaces, either for point spread function engineering (for sparse objects) [149] or for polarization component separation [150]. The generalization of these techniques for measuring simultaneously the 3D polarization at many points is a challenging problem for several reasons.…”

Section: Novel Measurement Techniquesmentioning

confidence: 99%

Geometric descriptions for the polarization of nonparaxial light: a tutorial

Alonso

2023

Adv. Opt. Photon.

View full text Add to dashboard Cite

This tutorial provides an overview of the local description of polarization for nonparaxial light, for which all Cartesian components of the electric field are significant. The polarization of light at each point is characterized by a three-component complex vector in the case of full polarization and by a 3 × 3 polarization matrix for partial polarization. Standard concepts for paraxial polarization such as the degree of polarization, the Stokes parameters, and the Poincaré sphere then have generalizations for nonparaxial light that are not unique and/or not trivial. This work aims to clarify some of these discrepancies, present some new concepts, and provide a framework that highlights the similarities and differences with the description for the paraxial regimes. Particular emphasis is placed on geometric interpretations.

show abstract

“…Polarization imaging, especially four-dimensional visual imaging including 1D polarization and 3D space information of the target, is a special and promising technology for future optical imaging 98 , 221 – 224 . Recently, Ma et al 98 proposed an efficient approach based on a well-designed asymmetric topological microlens array for the four-dimensional visual imaging by a single snapshot, Fig.…”

Section: Applicationsmentioning

confidence: 99%

Self-assembled liquid crystal architectures for soft matter photonics

Pan

et al. 2022

Light Sci Appl

View full text Add to dashboard Cite

Self-assembled architectures of soft matter have fascinated scientists for centuries due to their unique physical properties originated from controllable orientational and/or positional orders, and diverse optic and photonic applications. If one could know how to design, fabricate, and manipulate these optical microstructures in soft matter systems, such as liquid crystals (LCs), that would open new opportunities in both scientific research and practical applications, such as the interaction between light and soft matter, the intrinsic assembly of the topological patterns, and the multidimensional control of the light (polarization, phase, spatial distribution, propagation direction). Here, we summarize recent progresses in self-assembled optical architectures in typical thermotropic LCs and bio-based lyotropic LCs. After briefly introducing the basic definitions and properties of the materials, we present the manipulation schemes of various LC microstructures, especially the topological and topographic configurations. This work further illustrates external-stimuli-enabled dynamic controllability of self-assembled optical structures of these soft materials, and demonstrates several emerging applications. Lastly, we discuss the challenges and opportunities of these materials towards soft matter photonics, and envision future perspectives in this field.

show abstract

Imaging polarimetry through metasurface polarization gratings

Cited by 58 publications

References 23 publications

UV-Nanoimprint and Deep Reactive Ion Etching of High Efficiency Silicon Metalenses: High Throughput at Low Cost with Excellent Resolution and Repeatability

UV-Nanoimprint and Deep Reactive Ion Etching of High Efficiency Silicon Metalenses: High Throughput at Low Cost with Excellent Resolution and Repeatability

Geometric descriptions for the polarization of nonparaxial light: a tutorial

Self-assembled liquid crystal architectures for soft matter photonics

Contact Info

Product

Resources

About