Parity-time electromagnetic diodes in a two-dimensional nonreciprocal photonic crystal

He, Cheng; Lu, Ming‐Hui; Heng, Xin; Feng, Liang; Chen, Yanfeng

doi:10.1103/physrevb.83.075117

Cited by 48 publications

(25 citation statements)

References 32 publications

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“…However, no naturally occurring material can satisfy such a stringent requirement on the material parameters. In this section, we propose a design method, guided by an effective medium approximation that has been generally applied to metamaterials and PCs [27][28][29][30][31][32], to realize a ZIMGL by using a PC composed of an array of core-shell structures. A schematic is shown in the inset of Fig.…”

Section: Design Of Zimglmentioning

confidence: 99%

Simultaneous realization of a coherent perfect absorber and laser by zero-index media with both gain and loss

et al. 2016

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We investigate a unique type of zero-index medium with both gain and loss (ZIMGL), whose effective permittivity and permeability are both purely imaginary but of opposite signs. We analytically show that, by using a slab of ZIMGL with equal magnitude of loss and gain, simulation realization of a coherent perfect absorber (CPA) and laser, i.e., the so-called CPA laser, can be achieved. Previously the CPA laser was proposed in parity-time (P T ) symmetric systems. However, the ZIMGL does not possess the P T symmetry and thus the underlying physics is distinctly different. By designing a photonic crystal (PC) composed of core-shell rods, with loss and gain distributed in either the core or the shell, we have realized such a ZIMGL. The CPA-laser functionality of such a PC is also confirmed in our numerical simulations. Our work provides a different approach for simultaneous realization of CPA and laser besides P T -symmetric systems.

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Section: Design Of Zimglmentioning

confidence: 99%

Simultaneous realization of a coherent perfect absorber and laser by zero-index media with both gain and loss

et al. 2016

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“…To the best of our knowledge, the structure and bifurcations of the time-averaged Poynting vector field during the resonance scattering of a plane electromagnetic wave by a cylindrical column filled with a magnetoplasma have not been analyzed as yet in any published work. Evidently, such an analysis is important in itself and can also be useful for better understanding of the features of electromagnetic wave scattering from various structures consisting of cylindrical gyrotropic elements [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

The energy flow behavior during the resonance scattering of a plane electromagnetic wave by a magnetized plasma column

Es'kin¹,

Ivoninsky²,

Kudrin³

2014

The 8th European Conference on Antennas and Propagation (EuCAP 2014)

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Resonance scattering of a plane electromagnetic H wave by a magnetized plasma column is studied. The main attention is focused on the behavior of the Poynting vector field during the scattering. A comparison of the energy-flow structure in this case with that in the case of an isotropic dielectric column is made. Significant differences in the energy-flow structures in the two cases are revealed and discussed. A notable excess of the maximum absolute value of the Poynting vector at the boundary of a magnetized plasma column over that at the boundary of an isotropic dielectric scatterer of the same shape and size is found to occur.

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“…On the other hand, spatial inversion symmetry in real space is relative to x direction, and in reciprocal space the parity is relative to y k direction. That is to say that a pair of incident waves symmetry relative to y direction is the parity-time symmetric case, while a pair of counter incident waves is one-way transmission and a pair of symmetric incident waves relative to x direction is one-way reflection 29 .…”

Section:  mentioning

confidence: 99%

Nonreciprocal resonant transmission/reflection based on a one-dimensional photonic crystal adjacent to the magneto-optical metal film

He¹,

Sun²,

Zhang³

et al. 2013

Opt. Express

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We report the design of nonreciprocal resonant transmission/reflection using a one-dimensional photonic crystal (1DPC) adjacent to the magneto-optical (MO) metal film. The nonreciprocal surface modes are found at the interface between the PC and MO metal within the forbidden band of native PC structure. Breaking time-reversal symmetry using external magnetic field gives rise of such unique nonreciprocal properties. Quantitatively understanding of nonreciprocal resonant optical transmission/reflection behavior is performed using an effective admittance-matching theory. With excitation of the nonreciprocal surface modes, light can transmit and be reflected in one-way. Such design offers promising potential in realizing the optical diode.

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Parity-time electromagnetic diodes in a two-dimensional nonreciprocal photonic crystal

Cited by 48 publications

References 32 publications

Simultaneous realization of a coherent perfect absorber and laser by zero-index media with both gain and loss

Simultaneous realization of a coherent perfect absorber and laser by zero-index media with both gain and loss

The energy flow behavior during the resonance scattering of a plane electromagnetic wave by a magnetized plasma column

Nonreciprocal resonant transmission/reflection based on a one-dimensional photonic crystal adjacent to the magneto-optical metal film

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