Interference Eraser Experiment Demonstrated with All-Plasmonic Which-Path Marker Based on Reverse Spin Hall Effect of Light

Pham, Aline; Zhao, Airong; Jiang, Quanbo; Bellessa, J.; Genet, Cyriaque; Drezet, Aurélien

doi:10.1021/acsphotonics.7b01429

Cited by 11 publications

(8 citation statements)

References 36 publications

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“…Our findings provide a unified picture to understand two previously discovered effects on the same foot, and can be extended to study other SOI-induced effects in light (e.g., spin-controlled vortex generation [1,[9][10][11][12] and spin-Hall momentum shift [35][36][37][38][39] in inhomogeneous anisotropic media) and other waves (e.g., vortexbearing electron beams). [40,41] More importantly, as the SOI of light plays an increasingly important role in nanophotonics, [42][43][44][45][46][47][48] plasmonics, [49][50][51] and topological photonics, [52][53][54][55] our results…”

Section: Discussionsupporting

confidence: 51%

“…Our findings provide a unified picture to understand two previously discovered effects on the same foot, and can be extended to study other SOI‐induced effects in light (e.g., spin‐controlled vortex generation [ 1,9–12 ] and spin‐Hall momentum shift [ 35–39 ] in inhomogeneous anisotropic media) and other waves (e.g., vortex‐bearing electron beams). [ 40,41 ] More importantly, as the SOI of light plays an increasingly important role in nanophotonics, [ 42–48 ] plasmonics, [ 49–51 ] and topological photonics, [ 52–55 ] our results may pave the way for a variety of applications, such as precision metrology, [ 56,57 ] edge detection, [ 58,59 ] particle manipulation, [ 60,61 ] and various spin‐photonic components. [ 42–45,62,63 ]…”

Section: Discussionmentioning

confidence: 99%

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Topology‐Induced Phase Transitions in Spin‐Orbit Photonics

Ling

Guan

Cai

et al. 2021

Laser & Photonics Reviews

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Spin‐controlled vortex generation and spin‐Hall effect, two distinct effects discovered in optics, have been extensively studied recently. However, while physical origins of two effects are both due to spin‐orbit interactions, their inherent connections remain obscure which also hinders further explorations on the manipulations of them. Here, in studying the scattering of a spin‐polarized light beam at sharp interfaces, an intriguing phase transition between vortex generation and spin‐Hall shift trigged by varying the incidence angle is revealed. After reflection/refraction, the beam contains two components: normal and abnormal modes acquiring spin‐redirection‐Berry phases and Pancharatnam–Berry phases, respectively. Inside the abnormal beam, two classes of wave components gain Pancharatnam–Berry phases with distinct topological natures, generating intrinsic and extrinsic orbital angular momenta (OAM), respectively. Enlarging incidence angle changes the relative portions of these two contributions, making the abnormal beam undergo a phase transition from vortex generation to spin‐Hall shift. Such intriguing effect is experimentally observed at a purposely designed metamaterial slab, exhibiting efficiency enhanced by several‐thousand times compared to that at a conventional slab. These findings unify two previously discovered effects in a single framework, reinterpret previous results with clearer pictures, and shed light on understanding other physical effects involving the competition between intrinsic and extrinsic OAM.

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Section: Discussionsupporting

confidence: 51%

Section: Discussionmentioning

confidence: 99%

Topology‐Induced Phase Transitions in Spin‐Orbit Photonics

Ling

Guan

Cai

et al. 2021

Laser & Photonics Reviews

View full text Add to dashboard Cite

show abstract

“…In fact, similar phenomena were found in the related work where an antenna array was exploited to manipulate the polarization states. 24,29,30 It is expectable to improve the device performance in terms of the output power, the beam quality and the uniformity of the polarization state. Possible strategies include the increase of the preamplifier length, the increase of the dimensions of the antenna array and the reduction of the reflectivity caused by the antenna array.…”

Section: Some Efforts Have Been Devoted To Controlling the Polarizatimentioning

confidence: 99%

Terahertz master-oscillator power-amplifier quantum Cascade laser with controllable polarization

Zhu

Wang

et al. 2020

Applied Physics Letters

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We report the realization of controllable linear-to-circular polarization states in single-mode terahertz master-oscillator power-amplifier quantum cascade lasers (THz-MOPA-QCLs). The MOPA device contains a first-order distributed feedback (DFB) laser as the master-oscillator, a preamplifier, and a 2D periodical antenna array as the power extractor. The polarization state is determined by the orientation and the phase relationship between the antennas. The antenna array is carefully designed to efficiently extract the THz radiation, and not to induce field oscillation in the array or influence the mode oscillation in the DFB section. Each demonstrated device exhibits single-mode emission with a side mode suppression ratio of ~26 dB, and a single-lobed beam with a low divergence of ~2330. Realized in different devices, the degree of linear or circular polarization reaches as high as 97.5% or 99.3%. Both the operation frequency and the polarization state of the radiation are lithographically tunable.

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“…Summarizing the results of existing research shows that the application of plasmonic nanostructures and metasurfaces can greatly enhance the PSHE relative to the weak PSHE at the optical interface and enable direct observation through collecting reflected or transmitted light. [ 31–34 ] However, in the above‐mentioned researches, the scattering patterns are poorly contrasted between LCP and RCP incident lights, [ 26,35–37 ] and the PSHE is typically restricted to a single wavelength. [ 33,38,39 ] The devices are generally obtained at the expense of dimension, and the general scale of one dimension varies from 10 to 100 µm.…”

Section: Introductionmentioning

confidence: 99%

Subwavelength Broadband Photonic Spin Hall Devices via Optical Slot Antennas

Zhang

et al. 2021

Laser & Photonics Reviews

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The photonic spin Hall effect, wherein left‐ and right‐handed circularly polarized components can be separated during transportation after reflection or refraction by an optical interface through spin–orbit interaction, has gained increasing attention from the scientific and technological fields. Here, broadband subwavelength photonic spin Hall devices (PSHDs) are demonstrated on the basis of L‐shaped optical slot antennas. A basic PSHD comprises two L‐shaped slot antennas with a footprint size of 300 nm × 700 nm. The angle between the two radiation directions of the incident lights with different spins varies from 56° to 31° in the wavelength range of 750 to 850 nm. An array of antenna pairs is used to control radiation directions and improve the performance of the PSHDs. The proposed PSHDs are highly useful in integrated nanophotonic devices given their ultrasmall size, broadband response, and flexible design method.

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Interference Eraser Experiment Demonstrated with All-Plasmonic Which-Path Marker Based on Reverse Spin Hall Effect of Light

Cited by 11 publications

References 36 publications

Topology‐Induced Phase Transitions in Spin‐Orbit Photonics

Topology‐Induced Phase Transitions in Spin‐Orbit Photonics

Terahertz master-oscillator power-amplifier quantum Cascade laser with controllable polarization

Subwavelength Broadband Photonic Spin Hall Devices via Optical Slot Antennas

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