Measurement of the Pancharatnam–Berry phase in two-beam interference

Hannonen, Antti; Partanen, Henri; Leinonen, Aleksi; Heikkinen, Janne; Hakala, Tommi K.; Friberg, Ari T.; Setälä, Tero

doi:10.1364/optica.401993

Cited by 17 publications

(5 citation statements)

References 28 publications

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“…In symmetric and asymmetric modes, pseudo and real data can be coded, in conjunction with the degree of spin freedom. The metasurfaces are interpreted in the amorphous state by a simple geometric phase (Pancharatnam–Berry phase) [ 123 ], which leads to symmetrical SAM-to-OAM convert. A suitable stimulus is needed to interpret the accurate information to excite the GST phase transition from the amorphous to semi-crystalline state.…”

Section: Emerging Functional Metadevicesmentioning

confidence: 99%

Metamaterials and Metasurfaces: A Review from the Perspectives of Materials, Mechanisms and Advanced Metadevices

2022

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Throughout human history, the control of light, electricity and heat has evolved to become the cornerstone of various innovations and developments in electrical and electromagnetic technologies. Wireless communications, laser and computer technologies have all been achieved by altering the way light and other energy forms act naturally and how to manage them in a controlled manner. At the nanoscale, to control light and heat, matured nanostructure fabrication techniques have been developed in the last two decades, and a wide range of groundbreaking processes have been achieved. Photonic crystals, nanolithography, plasmonics phenomena and nanoparticle manipulation are the main areas where these techniques have been applied successfully and led to an emergent material sciences branch known as metamaterials. Metamaterials and functional material development strategies are focused on the structures of the matter itself, which has led to unconventional and unique electromagnetic properties through the manipulation of light—and in a more general picture the electromagnetic waves—in widespread manner. Metamaterial’s nanostructures have precise shape, geometry, size, direction and arrangement. Such configurations are impacting the electromagnetic light waves to generate novel properties that are difficult or even impossible to obtain with natural materials. This review discusses these metamaterials and metasurfaces from the perspectives of materials, mechanisms and advanced metadevices in depth, with the aim to serve as a solid reference for future works in this exciting and rapidly emerging topic.

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Section: Emerging Functional Metadevicesmentioning

confidence: 99%

Metamaterials and Metasurfaces: A Review from the Perspectives of Materials, Mechanisms and Advanced Metadevices

2022

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“…As a further example, only recently the PBP has been experimentally found in a classical set‐up such as the double‐slit interferometer. [ 218 ] Hard to predict from its origin, geometric phase in the form of Pancharatnam–Berry phase found a plethora of applications, inducing a paradigm shift in photonics by providing a whole new way to mold the optical wavefront. Beyond representing a novel physical phenomenon to realize well known devices as lenses, geometric phase made available new functionalities based upon the strong spin‐orbit interaction typical of this effect, [ 78,219,220 ] such as the improvement of the depth‐of‐field in microscopy, to cite an example.…”

Section: Final Remarksmentioning

confidence: 99%

Geometric Phase in Optics: From Wavefront Manipulation to Waveguiding

Jisha

Nolte

Alberucci

2021

Laser & Photonics Reviews

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Geometric phase is a unifying and central concept in physics, including optics. As a matter of fact, optics played a pivotal role from the inception of this new paradigm, as some of the first experimental demonstrations have been carried out in optics. A specific type of geometric phase was first introduced by Pancharatnam while investigating interference effects between different polarizations. This specific type of geometric phase, nowadays called the Pancharatnam–Berry phase, is related to the variation of light polarization, encompassing exotic properties when compared with the dynamic phase associated with the optical path. The most widespread manifestation of the Pancharatnam–Berry phase occurs in the presence of a twisted anisotropic material, yielding a point‐wise phase modulation proportional to the local rotation angle of the material. Here the basic mechanism behind the Pancharatnam–Berry phase is discussed. The various applications of this relatively original concept in photonics are then reviewed, presenting both the most important results and manufactured devices reported in literature. The interplay between geometric phase and diffraction occurring in bulk structures is discussed in detail. In the latter case it is shown how geometric phase can be harnessed to generate a new kind of optical waveguide without the necessity of any index gradient.

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“…We note that the features of SVBs might thus also be interesting from a fundamental point of view. For example, they can be used to investigate analogies between classical and quantum optics [18][19][20] and to study geometric phases discussed in a similar context in other domains [22,23].…”

Section: A Spectral Vector Beamsmentioning

confidence: 99%

Spectral Vector Beams for High-Speed Spectroscopic Measurements

Kopf¹,

Ruano²,

Hiekkamäki³

et al. 2021

Preprint

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Structured light harnessing multiple degrees of freedom has become a powerful approach to use complex states of light in fundamental studies and applications. Here, we investigate the light field of an ultrafast laser beam with a wavelength-depended polarization state, a beam we term spectral vector beam. We demonstrate a simple technique to generate and tune such structured beams and demonstrate their spectroscopic capabilities. By only measuring the polarization state using fast photodetectors, it is possible to track pulse-to-pulse changes in the frequency spectrum caused by, e.g. narrowband transmission or absorption. In our experiments, we reach read-out rates of around 6 MHz, which is limited by our technical ability to modulate the spectrum and can in principle reach GHz read-out rates. In simulations we extend the spectral range to more than 1000 nm by using a supercontinuum light source, thereby paving the way to various applications requiring high-speed spectroscopic measurements.

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Measurement of the Pancharatnam–Berry phase in two-beam interference

Cited by 17 publications

References 28 publications

Metamaterials and Metasurfaces: A Review from the Perspectives of Materials, Mechanisms and Advanced Metadevices

Metamaterials and Metasurfaces: A Review from the Perspectives of Materials, Mechanisms and Advanced Metadevices

Geometric Phase in Optics: From Wavefront Manipulation to Waveguiding

Spectral Vector Beams for High-Speed Spectroscopic Measurements

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