Optically nonactive assorted helix array with interchangeable magnetic/electric resonance

Xiong, Xiang; Chen, Xiao Chun; Wang, Mu; Peng, Rw; Shu, Da; Sun, Cheng

doi:10.1063/1.3554704

Cited by 9 publications

(8 citation statements)

References 28 publications

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“…One observes that the intensity in the plane A matches very well the intensity in E. This is due to the fact that these planes are separated by one longitudinal period c along the z-axis. Using this intensity distribution in holographic lithography, samples with attractive properties are to be expected since it has been established -for example -that in a combination of metallic helices with different chiralities, pure magnetic or electric resonances can be selectively excited using linearly polarized light, leading to negative permittivity and negative permeability, respectively [41].…”

Section: Square Helix Latticementioning

confidence: 99%

Systematic approach to complex periodic vortex and helix lattices

Becker¹,

Rose²,

Boguslawski³

et al. 2011

Opt. Express

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We present a general comprehensive framework for the description of symmetries of complex light fields, facilitating the construction of sophisticated periodic structures carrying phase dislocations. In particular, we demonstrate the derivation of all three fundamental two-dimensional vortex lattices based on vortices of triangular, quadratic, and hexagonal shape, respectively. We show that these patterns represent the foundation of complex three-dimensional lattices with outstanding helical intensity distributions which suggest valuable applications in holographic lithography. This systematic approach is substantiated by a comparative study of corresponding numerically calculated and experimentally realized complex intensity and phase distributions.

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Section: Square Helix Latticementioning

confidence: 99%

Systematic approach to complex periodic vortex and helix lattices

Becker¹,

Rose²,

Boguslawski³

et al. 2011

Opt. Express

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“…Therefore, by combining the helices with the same handedness, or combining the helices with different handedness, 34 effective electric and magnetic dipoles of the neighboring building blocks will either sum up, or cancel out. Consequently, a chiral metamaterial or a structure with the pure electric (or magnetic) resonance only will be constructed.…”

Section: Fig 1 (A)mentioning

confidence: 99%

“…33,34 This means that if the neighboring building blocks are perpendicularly arranged, for a selected polarization of incident light, the negative permittivity or negative permeability can be realized simultaneously. In this way, a negative-refractive-indexed material can be achieved.…”

Section: Introductionmentioning

confidence: 99%

Assembling optically active and nonactive metamaterials with chiral units

Xiong

Jiang

et al. 2012

AIP Advances

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Metamaterials constructed with chiral units can be either optically active or nonactive depending on the spatial configuration of the building blocks. For a class of chiral units, their effective induced electric and magnetic dipoles, which originate from the induced surface electric current upon illumination of incident light, can be collinear at the resonant frequency. This feature provides significant advantage in designing metamaterials. In this paper we concentrate on several examples. In one scenario, chiral units with opposite chiralities are used to construct the optically nonactive metamaterial structure. It turns out that with linearly polarized incident light, the pure electric or magnetic resonance (and accordingly negative permittivity or negative permeability) can be selectively realized by tuning the polarization of incident light for 90°. Alternatively, units with the same chirality can be assembled as a chiral metamaterial by taking the advantage of the collinear induced electric and magnetic dipoles. It follows that for the circularly polarized incident light, negative refractive index can be realized. These examples demonstrate the unique approach to achieve certain optical properties by assembling chiral building blocks, which could be enlightening in designing metamaterials

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“…Up to now, in addition to the quasi-two-dimensional and the three-dimensional structures, [6][7][8][9][10][11] patterned surfaces [12][13][14][15] have been proposed to manipulate the polarization state. In these designs, the resonant frequencies along two orthogonal directions are different; hence the transmission light in these two directions possesses a different phase shift with respect to the incident light.…”

mentioning

confidence: 99%

Tuning the polarization state of light via time retardation with a microstructured surface

et al. 2013

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We report here an approach to tune efficiently the phase difference of light in two orthogonal directions, ϕ, by controlling the time retardation with a microstructured surface made of L-shaped metallic patterns. The time retardation through the judicious microstructures can be adjusted on the femtosecond level, and ϕ can be linearly tuned accurately from −180 • to 180 • by changing the frequency of incident light. Particularly, the amplitudes in two orthogonal directions are identical, so that the polarization state always locates on a meridian of a Poincaré sphere. Near-field measurement confirms that there is indeed time retardation between the oscillations in the orthogonal directions of the L-shaped patterns. This approach offers an alternative way to manipulate the polarization state of light.

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Optically nonactive assorted helix array with interchangeable magnetic/electric resonance

Cited by 9 publications

References 28 publications

Systematic approach to complex periodic vortex and helix lattices

Systematic approach to complex periodic vortex and helix lattices

Assembling optically active and nonactive metamaterials with chiral units

Tuning the polarization state of light via time retardation with a microstructured surface

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