Rashba-type plasmonic metasurface

Shitrit, Nir; Maayani, Shai; Veksler, Dekel; Kleiner, Vladimir; Hasman, Erez

doi:10.1364/ol.38.004358

Cited by 28 publications

(30 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The phase factor to a splitting of the dispersion relation of states with opposite optical helicity [33]. This effect is similar to Rashba spin-band splitting in 2D electronic systems subjected to a transverse potential gradient [34,35].…”

Section: General Theoretical Frameworkmentioning

confidence: 81%

Advanced control of nonlinear beams with Pancharatnam-Berry metasurfaces

et al. 2016

View full text Add to dashboard Cite

show abstract

Section: General Theoretical Frameworkmentioning

confidence: 81%

Advanced control of nonlinear beams with Pancharatnam-Berry metasurfaces

et al. 2016

View full text Add to dashboard Cite

show abstract

“…Crucially, neither the individual emitters nor the array need have a chiral form. Similar principles are deployed in connection with the plasmonic structures known as planar chiral metamaterials [56][57][58][59][60].…”

Section: Principles Of Photon Emission From a Molecular Arraymentioning

confidence: 97%

Direct generation of optical vortices

2014

View full text Add to dashboard Cite

A detailed scheme is established for the direct generation of optical vortices, signifying light endowed with orbital angular momentum. In contrast to common techniques based on the tailored conversion of the wave front in a conventional beam, this method provides for the direct spontaneous emission of photons with the requisite field structure. This form of optical emission results directly from the electronic relaxation of a delocalized exciton state that is supported by a ringlike array of three or more nanoscale chromophores. An analysis of the conditions leads to a general formulation revealing a requirement for the array structure to adhere to one of a restricted set of permissible symmetry groups. It is shown that the coupling between chromophores within each array leads to an energy level splitting of the exciton structure, thus providing for a specific linking of exciton phase and emission wavelength. For emission, arrays conforming to one of the given point-group families' doubly degenerate excitons exhibit the specific phase characteristics necessary to support vortex emission. The highest order of exciton symmetry, corresponding to the maximum magnitude of electronic orbital angular momentum supported by the ring, provides for the most favored emission. The phase properties of the emission produced by the relaxation of such excitons are exhibited on plots which reveal the azimuthal phase progression around the ring, consistent with vortex emission. It is proven that emission of this kind produces electromagnetic fields that map with complete fidelity onto the phase structure of a Laguerre-Gaussian optical mode with the corresponding topological charge. The prospect of direct generation paves the way for practicable devices that need no longer rely on the modification of a conventional laser beam by a secondary optical element. Moreover, these principles hold promise for the development of a vortex laser, also based on nanoscale exciton decay, enabling the production of coherent radiation with a tailor-made helical wave front.

show abstract

“…Such a consideration can also lead to more dispersion-related phenomena (e.g. Rashba-like effect in thermal radiation) [108][109][110][111][112], which will be introduced in Section 5.…”

Section: Surface Plasmon Generation With Geometric-phase Metasurfacesmentioning

confidence: 99%

“…A very useful and alternative perspective is a spin-splitting of the dispersion diagram of the material itself. By exploiting geometric-phase metasurfaces with rotated microstructures [103,104,106,107], an optical counterpart of the Rashba effect can be observed [109][110][111][112]. Figure 12A shows a 1D case, in which the structure is rotated from one cell to the next.…”

Section: Symmetry-related Applications With Spin-orbit Interactionmentioning

confidence: 99%

“…Figure 12A shows a 1D case, in which the structure is rotated from one cell to the next. It causes a spin-splitting of the surface-wave (phonon-polariton) dispersion, which in turns causes a spin-splitting in the absorption spectrum and the thermal radiation bands (see Figure 12A) [108,109]. A more Rashba-like band structure with spin-split parabolic bands in two dimensions can be obtained using a nanoslot array with rotated orientation angle in a 2D kagome lattice (see Figure 12B) [110].…”

Section: Symmetry-related Applications With Spin-orbit Interactionmentioning

confidence: 99%

See 1 more Smart Citation

Spin-dependent optics with metasurfaces

et al. 2016

View full text Add to dashboard Cite

Optical spin-Hall effect (OSHE) is a spindependent transportation phenomenon of light as an analogy to its counterpart in condensed matter physics. Although being predicted and observed for decades, this effect has recently attracted enormous interests due to the development of metamaterials and metasurfaces, which can provide us tailor-made control of the light-matter interaction and spin-orbit interaction. In parallel to the developments of OSHE, metasurface gives us opportunities to manipulate OSHE in achieving a stronger response, a higher efficiency, a higher resolution, or more degrees of freedom in controlling the wave front. Here, we give an overview of the OSHE based on metasurface-enabled geometric phases in different kinds of configurational spaces and their applications on spin-dependent beam steering, focusing, holograms, structured light generation, and detection. These developments mark the beginning of a new era of spin-enabled optics for future optical components.

show abstract

Rashba-type plasmonic metasurface

Cited by 28 publications

References 22 publications

Advanced control of nonlinear beams with Pancharatnam-Berry metasurfaces

Advanced control of nonlinear beams with Pancharatnam-Berry metasurfaces

Direct generation of optical vortices

Spin-dependent optics with metasurfaces

Contact Info

Product

Resources

About