Manipulating optical polarization by stereo plasmonic structure

Xu, Jia; Li, T.; Lu, Fanfan; Wang, S. M.; Zhu, Shining

doi:10.1364/oe.19.000748

Cited by 44 publications

(21 citation statements)

References 20 publications

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“…Metamaterials are a new class of artificial material constructed from subwavelength metallo-dielectric structures [14][15][16][17][18][19][20][21][22][23]. They have unique features that are not found in natural materials such as the "perfect lens" which can overcome the diffraction limit [24].…”

Section: Introductionmentioning

confidence: 99%

Circular dichroism in planar nonchiral metamaterial made of elliptical nanoholes array

Cao

Cryan

2012

Journal of Electromagnetic Waves and Applications

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Section: Introductionmentioning

confidence: 99%

Circular dichroism in planar nonchiral metamaterial made of elliptical nanoholes array

Cao

Cryan

2012

Journal of Electromagnetic Waves and Applications

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“…Conventional polarization devices are generally realized by using birefringence in nematic liquid crystals or polymers 7, 11 and are based on the mechanism of phase retardation between the two orthogonally polarized waves propagating along the device. Therefore, conventional polarization devices usually require a specific thickness and bulky configurations to obtain sufficient phase accumulation 12, 13 . It is extremely challenging to integrate these polarization converters within ultra-thin devices, such as advanced sensors and nano-photonic devices.…”

Section: Introductionmentioning

confidence: 99%

Bandwidth broadening of a linear polarization converter by near-field metasurface coupling

Gao

Singh

Yang

et al. 2017

Sci Rep

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We experimentally demonstrate a highly efficient, broadband linear polarization converter functioning at terahertz frequencies. The linear polarization converter is composed of three metasurfaces and two dielectric layers interlaced with each other. The neighboring unit cells of the central metasurface layer of the linear polarization converter exhibit strong electromagnetic coupling, which increases the number of resonances and results in significant bandwidth broadening. The simulation and experimental results show that in the frequency range of 0.2 to 0.4 THz, the proposed polarization converter has a flat transmission curve and exhibits a transmission efficiency that is higher than 80%. High performance terahertz polarization conversion is desirable in many fields, such as terahertz spectroscopy, imaging, and communications.

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“…Compared with conventional optical elements, plasmonic devices provide a more compact and efficient means to manipulate the polarization of light (e.g., plasmonic polarizers 1-5 , polarization rotators and converters [6][7][8][9][10][11] , polarization detectors 12 , etc.). Recently, plasmoninduced spin-orbital coupling has generated strong interest in the field of photonics [13][14][15][16][17] , primarily due to the possibility of polarization and phase modulation.…”

Section: Introductionmentioning

confidence: 99%

Plasmonic polarization generator in well-routed beaming

Liu

Tang

et al. 2015

Light Sci Appl

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As one of the recent advances of optics and photonics, plasmonics has enabled unprecedented optical designs. Having a vectorial configuration of surface plasmon field, metallic nanostructures offer efficient solutions in polarization control with a very limited sample thickness. Many compact polarization devices have been realized using such metallic nanostructures. However, in most of these devices, the functions were usually simple and limited to a few polarization states. Here, we demonstrated a plasmonic polarization generator that can reconfigure an input polarization to all types of polarization states simultaneously. The plasmonic polarization generator is based on the interference of the in-plane (longitudinal) field of the surface plasmons that gives rise to versatile near-field polarization states on a metal surface, which have seldom been considered in previous studies. With a well-designed nanohole array, the in-plane field of SPPs with proper polarization states and phases can be selectively scattered out to the desired light beams. A manifestation of eight focusing beams with well-routed polarizations was experimentally demonstrated. Our design offers a new route to achieve the full control of optical polarizations and possibly advance the development in photonic information processing. Keywords: near-field interference; phase modulation; plasmonics; polarization generator INTRODUCTIONOptical polarization is an important characteristic of light that enables transmission of information for signal processing in optical information technology by utilizing classical or quantum phenomena. Compared with conventional optical elements, plasmonic devices provide a more compact and efficient means to manipulate the polarization of light (e.g., plasmonic polarizers 1-5 , polarization rotators and converters 6-11 , polarization detectors 12 , etc.). Recently, plasmoninduced spin-orbital coupling has generated strong interest in the field of photonics [13][14][15][16][17] , primarily due to the possibility of polarization and phase modulation. In fact, the vectorial structure of the surface plasmon field gives rise to unique properties in the conversion of optical fields between propagating light and bounded surface plasmon polaritons (SPPs), where the polarization information of light can be reloaded by special SPPs in a controllable way [18][19][20][21][22] . However, most of these devices offer only limited functions in polarization control. To address the ever increasing requirements of information processing, a full polarization generator is one of the desired technologies.The limitations of polarization control would obviously be overcome with the development of a polarization converter that can convert all polarization states at the same time. However, developing such an all-states polarizer in a single device is quite a challenge. Here, we demonstrate such a plasmonic polarization generator that can generate, in principle, all types of polarizations and route them selectively to the appropriate beams in...

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Manipulating optical polarization by stereo plasmonic structure

Cited by 44 publications

References 20 publications

Circular dichroism in planar nonchiral metamaterial made of elliptical nanoholes array

Circular dichroism in planar nonchiral metamaterial made of elliptical nanoholes array

Bandwidth broadening of a linear polarization converter by near-field metasurface coupling

Plasmonic polarization generator in well-routed beaming

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