Taming the Electromagnetic Boundaries via Metasurfaces: From Theory and Fabrication to Functional Devices

Luo, Xiangang; Pu, Mingbo; Ma, Xiaoliang; Li, Xiong

doi:10.1155/2015/204127

Cited by 45 publications

(26 citation statements)

References 268 publications

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“…As two-dimensional (2D) metamaterials, metasurfaces have been demonstrated to be able to achieve full control of the amplitudes, phases and polarization states of electromagnetic waves 1 2 . With gradient phase retardation across the metasurface, it was shown that the ancient optical law should be recast into a more general form 3 4 .…”

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confidence: 99%

Multispectral optical metasurfaces enabled by achromatic phase transition

Zhao

Gao

et al. 2015

Sci Rep

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111

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The independent control of electromagnetic waves with different oscillating frequencies is critical in the modern electromagnetic techniques, such as wireless communications and multispectral imaging. To obtain complete control of different light waves with optical materials, the chromatic dispersion should be carefully controlled, which is however extremely difficult. In this paper, we propose a method to control the behaviors of different light waves through a metasurface which is able to generate achromatic geometric phase. Using this approach, a doughnut-shaped and a solid light spot were achieved at the same focal plane using two light sources with different wavelengths as used in the stimulation emission depletion (STED) microscope system. In order to reveal the full capacity of such method, tight focusing at multiple wavelengths is also represented, where the focal spots of different wavelengths are located at the same position. The results provided here may open a new door to the design of subminiature optical components and integrated optical system operating at multiple wavelengths.

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confidence: 99%

Multispectral optical metasurfaces enabled by achromatic phase transition

Zhao

Gao

et al. 2015

Sci Rep

Self Cite

111

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“…Metasurfaces are thin planar arrays of resonant subwavelength elements arranged in a periodic or aperiodic (even random) manner which modifies boundary conditions for impinging optical waves in order to realize specific wave shaping. In recent years, metasurfaces have attracted progressively increasing attention and have become a rapidly growing field of research, due to their remarkable ability in manipulating electromagnetic (EM) waves, their versatility, and their ease of on-chip fabrication and integration [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24]. Such metasurfaces can mimic bulk optics since they are capable of engineering the phase front of reflected and/or refracted optical waves at will.…”

Section: Introductionmentioning

confidence: 99%

Metasurface-Based Polarimeters

2018

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The state of polarization (SOP) is an inherent property of light that can be used to gain crucial information about the composition and structure of materials interrogated with light. However, the SOP is difficult to experimentally determine since it involves phase information between orthogonal polarization states, and is uncorrelated with the light intensity and frequency, which can be easily determined with photodetectors and spectrometers. Rapid progress on optical gradient metasurfaces has resulted in the development of conceptually new approaches to the SOP characterization. In this paper, we review the fundamentals of and recent developments within metasurface-based polarimeters. Starting by introducing the concepts of generalized Snell's law and Stokes parameters, we explain the Pancharatnam-Berry phase (PB-phase) which is instrumental for differentiating between orthogonal circular polarizations. Then we review the recent progress in metasurface-based polarimeters, including polarimeters, spectropolarimeters, orbital angular momentum (OAM) spectropolarimeters, and photodetector integrated polarimeters. The review is ended with a short conclusion and perspective for future developments.

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“…It is well known that the propagations and characteristics of metamaterial are significantly different from those of isotropic materials [3][4][5][6][7][8][9][10][11][12][13][14][15]. Metamaterial has many unusual properties and may lead to important applications, such as absorber [16], wave splitter [17], and subwavelength rectangular cavity [18].…”

Section: Introductionmentioning

confidence: 99%