Creation of a needle of longitudinally polarized light in vacuum using binary optics

Wang, Haifeng; Shi, Luping; Luk’yanchuk, Boris; Sheppard, Colin J. R.; Chong, Chong Tow

doi:10.1038/nphoton.2008.127

Cited by 818 publications

(447 citation statements)

References 44 publications

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“…Here it should be noted that the main differences between our work and that of [16] are as follows. Firstly, in [16], Wang et al used radially polarized Bessel beam to generate the sub-wavelength nondiffraction beam, and the super-resolution effect was mainly from the contribution of longitudinal polarization component.…”

Section: The Design Results and Analysismentioning

confidence: 81%

“…Firstly, in [16], Wang et al used radially polarized Bessel beam to generate the sub-wavelength nondiffraction beam, and the super-resolution effect was mainly from the contribution of longitudinal polarization component. In this work, the circularly polarized beam is chosen, and the super-resolution effect is from the transverse component.…”

Section: The Design Results and Analysismentioning

confidence: 99%

“…However, it is difficult to realize the spot below diffraction limit due to the optical diffraction limit effect. In order to break through the diffraction limit, lots of ways to obtain super-resolution non-diffraction beam were presented and discussed such as hyperlens and super-oscillatory lens [9][10][11], utilizing superlens to turn evanescent waves into propagating waves and obtain subwavelength imaging [12,13], handling of the evanescent waves with near field diffraction structures [2,14], and super-resolution apodization through pupil masks [14][15][16][17][18]. In these methods, the superresolution pupil filters (or phase plates) with amplitude and phase modulations are always hot subjects.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Creation of Super-Resolution Non-Diffraction Beam by Modulating Circularly Polarized Lightwith Ternary Optical Element

Wei¹,

Zha²,

Gan³

2013

PIER

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Abstract-In order to obtain a super-resolution non-diffraction beam, we propose a fast searching method to design a ternary optical element combined with the circularly polarized light. The optimized results show that a beam with a spot size of 0.356λ and depth of focus of 8.28λ can be achieved by focusing with an oil lens of numerical aperture N A = 1.4 and refractive index of oil n = 1.5. The analysis reveals that the spot size of transverse component is 0.273λ, indicating that the super-resolution effect mainly comes from the transverse component. The spot size inside the media can theoretically reach down to 0.273λ because the spot size inside the media is mainly determined by the transverse component.

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Section: The Design Results and Analysismentioning

confidence: 81%

Section: The Design Results and Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Creation of Super-Resolution Non-Diffraction Beam by Modulating Circularly Polarized Lightwith Ternary Optical Element

Wei¹,

Zha²,

Gan³

2013

PIER

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“…[4] Various complex light field beams have been investigated, such as the radially polarized Lorentz-Gauss vortex beam [5] and the radially polarized Laguerre-Bessel-Gaussian beam. [6] Radially polarized beams have become an active research topic over the years because of their specific focusing characteristics [7,8] and potential applications in super resolution [9,10] and particle manipulation, [6] www.advopticalmat. de found.…”

Section: Introductionmentioning

confidence: 99%

Generation of Radial Polarized Lorentz Beam with Single Layer Metasurface

Guo

Wang

et al. 2017

Advanced Optical Materials

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as well as ultrafast phenomena sensing. [11] Practical applications for nondiffracted waves include light collimating, focusing, and shaping. [12][13][14] The Lorentz beam is a nondiffracted wave that is characterized by small size, long focal length, and extended transmission distance. [12] Typical techniques to produce Lorentz beams usually involve combinations of multiple optical elements. However, such systems are bulky, complicated, and inconvenient. To generate such novel beams simply, we employ a single layer metasurface device to modulate simultaneously the amplitude and polarization of the illuminating light. Metasurfaces are viewed as a kind of artificial material composed of periodic subwavelength metal or dielectric structures. When coupled resonantly to the electric and/or magnetic components of an incident electromagnetic field, they provide a spatially varying optical response (e.g., scattering amplitude, phase, and polarization). With the advantage of easy-etching, ultrathin as well as miniaturization, a broad range of applications of metasurfaces has been reported, including superlenses, [15,16] wave plates, [17][18][19] nonlinear optics, [20] and holograms. [21] However, these previous studies were focused on modulating one attribute of light beams, for example amplitude, phase or polarization. Several studies were reported to have modulated the phase [22] and polarization direction. [23] Only numerical simulations are carried out to demonstrate the ability of metasurface for multiple parameters modulation because double-layer structures [24] are difficult to fabricate. Traditionally, the concentric metal-ring wire grid is used to achieve radial polarization. [25][26][27] The structure is relatively simple but fails to generate amplitude modulation. Furthermore, circularly polarized light is required to generate radially polarized light; nevertheless, it comes accompanied by an unexpected vortex phase distribution. In this work, a designed metasurface is fabricated consisting of crosses of various sizes and orientations. The variation in size is employed to modulate the amplitude whereas variation in orientation is used to modulate the polarization distribution. With right/left circularly polarized (RCP/LCP) incidence, the output polarization may be radial or angular, whereas the amplitude obeys the Lorentz distribution. Nine cross structures were fabricated to achieve certain desired amplitude and polarization modulations. The polarization and amplitude distributions of the beam generated by the device are detected using a terahertz focal plane imaging system. A strong agreement between theoretical and experimental results was

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“…[1][2][3][4] According to the spatial distribution of the polarization, CVBs are classified as radially polarized, azimuthally polarized, and hybridly polarized beams. Particularly, radially polarized beams can be focused into tighter focal spots with a strong longitudinal field component 5 and were applied in high-resolution imaging, 6 nanoparticle manipulation, 7 material processing, 8 plasmonic focusing, 9 and Z-scan technique, 10 etc. Various techniques have been developed to generate CVBs or vortex beams, such as axial birefringent components, spatial light modulators, angular gratings, and interferometric methods.…”

mentioning

confidence: 99%

Ultrafast all-fiber based cylindrical-vector beam laser

Mao

Feng

Zhang

et al. 2017

Applied Physics Letters

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Cylindrical-vector beams (CVBs) with axial symmetry in polarization and field intensity are gathering increasing attention from fundamental research to practical applications. However, a majority of the CVBs are generated by modulating light beams in free space, and the temporal durations are far away from the ultrafast regime. Here, an ultrafast all-fiber based CVB laser is demonstrated via intermodal coupling in two mode fibers. In the temporal domain, chirp-free pulses are formed with combined actions of the ultrafast saturable absorption, self-phase modulation, and anomalous dispersion. In the spatial domain, the lateral offset splicing technique and a two mode fiber Bragg grating are adopted to excite and extract CVBs, respectively. The ultrafast CVB has an annular profile with a duration of 6.87 ps and a fundamental repetition rate of 13.16 MHz, and the output polarization status is switchable between radially and azimuthally polarized states. This all-fiber-based ultrafast CVB laser is a simple, low-cost source for diversified applications of nanoparticle manipulation, high-resolution imaging, material processing, spatiotemporal nonlinear optics, etc.

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Creation of a needle of longitudinally polarized light in vacuum using binary optics

Cited by 818 publications

References 44 publications

Creation of Super-Resolution Non-Diffraction Beam by Modulating Circularly Polarized Lightwith Ternary Optical Element

Creation of Super-Resolution Non-Diffraction Beam by Modulating Circularly Polarized Lightwith Ternary Optical Element

Generation of Radial Polarized Lorentz Beam with Single Layer Metasurface

Ultrafast all-fiber based cylindrical-vector beam laser

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