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Polarization and nonlinear effects enhancement in periodic structures and systems with strong field localization.

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Presentation on theme: "Polarization and nonlinear effects enhancement in periodic structures and systems with strong field localization."— Presentation transcript:

1 Polarization and nonlinear effects enhancement in periodic structures and systems with strong field localization

2 Fabry-Perot resonator
Control of the resonant properties of nonlinear planar metamaterials Fabry-Perot resonator Bragg mirrors Nonlinear filling Photonic crystals Plasmonic structures Planar metamaterials

3 Fabry-Perot resonator
Nonreciprocity and bistability in layered structure with nonlinear defect Fabry-Perot resonator Nonlinear filling Bragg mirror Set of layers with nonlinear defect

4 Reflection and transmission spectra of layered chiral structure with linear defect
S - polarization P - polarization

5 Distribution of the field intensity inside the structure
S - polarization

6 Reflection and transmission spectra of layered achiral structure with nonlinear defect
Bistability

7 Frequency dependences of magnitude of reflection and transmission coefficients of chiral structure with nonlinear defect Multistability 7

8 Field distribution inside the structure with linear defect versus the chirality parameter
8

9 Transmission and reflection spectra of symmetric magnetophotonic multilayer with linear defect
Zeeman-like dublet

10 Transmission and reflection spectra of symmetric magnetophotonic multilayer with nonlinear defect

11 Polarization switching between orthogonally polarized states
Polarization bistability in symmetric magnetophotonic multilayer with nonlinear defect Polarization switching between orthogonally polarized states

12 Polarization switching between elliptically polarized states
Polarization bistability in asymmetric magnetophotonic multilayer with nonlinear defect Polarization switching between elliptically polarized states

13 The size of square translation cell is 900 nm
Optical bistability involving planar metamaterial with a broken structural symmetry Asymmetric split ring The size of square translation cell is 900 nm Nonlinear substrate

14 Array of asymmetric split rings
Frequency dependences of transmission coefficient and current magnitude in linear case Array of asymmetric split rings Fano resonances

15 Array of asymmetric split rings
Frequency dependences of current magnitude and transmission coefficient in nonlinear case Array of asymmetric split rings

16 increasing decreasing Hysteresis loops of the transmission coefficient
incident field magnitude decreasing increasing

17 Planar metamaterial and its unite cell
Papasimakis, Fu, Fedotov, Prosvirnin, Tsai, and Zheludev, Appl. Phys. Lett., 94 (2009) Trapped mode Nonlinear substrate

18 Field localization. Simulation of inner intensity

19 Simulation of nonlinearity
Current value: Permittivity of nonlinear substrate: Nonlinear equation on average value of current: Coefficients of transmission and reflection:

20 Optical bistability Array of two concentric rings Bistability

21 Bistability. Fano resonances
Array of double concentric rings Fano resonance

22 Absorption bistability by trapping-light planar metamaterial
Array of double concentric rings Bistability

23 Absorption bistability by trapping-light planar metamaterial
Closed loops

24 Double-layer fish-scale nonlinear metamaterial
Nonlinear substrate

25 Two kinds of resonances in double-layer fish-scale metamaterial
Resonant current distributions 1-st kind of resonance 2-nd kind of resonance

26 Frequency dependences of inner field intensity in double-layer fish-scale nonlinear metamaterial
lg A [kW/cm2] = line line line e1=3, enl=0.005 cm2/kW

27 Frequency dependences of transmission of double-layer fish-scale nonlinear metamaterial
A [kW/cm2] = line line line e1=3, enl=0.005 cm2/kW

28 Trapped mode resonance in the array of dielectric bars
All-dielectric array Germanium bars, n = 4.12 dx = dy = 975 nm Bar cross section = 195 x 195 nm2 A giant red shift and enhancement of the light confinement !

29 Resonant field distribution
The distribution of the electric field x-component within the periodic cell

30 Saturation effect in active metamaterial
The unite cell of all-dielectric array Silicon Silica Khardikov, Prosvirnin, arXiv: [physics.optics], 2012

31 Enhancement of luminescence of QD layer hybridized with all-dielectric metamaterial
Line Is = 2.0 2 - Is = 0.4 3 - Is = 0.04

32 The distribution of saturation factor in the cross section of array
The saturation factor 1/(1+I/Is)


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