scholarly journals Shaping Light in Backward-Wave Nonlinear Hyperbolic Metamaterials

2018 ◽  
Author(s):  
Alexander K. Popov ◽  
Sergey A. Myslivets ◽  
Vitaly V. Slabko ◽  
Victor A. Tkachenko ◽  
Thomas F. George
Keyword(s):  
Electromagnetic Waves ◽  
Nonlinear Optical ◽  
Propagation Direction ◽  
Optical Coupling ◽  
Hyperbolic Metamaterials ◽  
Light Pulses ◽  
Plasmonic Metamaterials ◽  
Hyperbolic Dispersion ◽  
Potential Applications ◽  
Directed Energy

Backward electromagnetic waves are extraordinary waves with contra-directed phase velocity and energy flux. Unusual properties of the coherent nonlinear optical coupling of the phase-matched ordinary and backward electromagnetic waves with contra-directed energy fluxes are described which enable greatly-enhanced frequency and propagation direction conversion, parametrical amplification, as well as control of shape of the light pulses. Extraordinary transient processes that emerge in such metamaterials in pulsed regimes are described. The results of the numerical simulation of particular plasmonic metamaterials with hyperbolic dispersion are presented, which prove the possibility to match phases of such coupled guided ordinary and backward electromagnetic waves. Particular properties of the outlined processes in the proposed metamaterial are demonstrated through numerical simulations. Potential applications include ultra-miniature amplifiers, frequency changing reflectors, modulators, pulse shapers, and remotely actuated sensors.

scholarly journals Broadband tunable nonlinear optical response in plasmonic metamaterials -INVITED

2020 ◽  
Vol 238 ◽  
pp. 11001
Author(s):  
Tiziana Cesca ◽  
Domenico Genchi ◽  
Raul Rangel-Rojo ◽  
Jorge A. Reyes-Esqueda ◽  
Giovanni Mattei
Keyword(s):  
Optical Properties ◽  
Nonlinear Optical ◽  
Nonlinear Response ◽  
Optical Response ◽  
Nonlinear Optical Response ◽  
Input Beam ◽  
Hyperbolic Metamaterials ◽  
Plasmonic Metamaterials ◽  
Rich Spectrum ◽  
Comprehensive Study

Nanostructured materials with tunable nonlinear optical response are of great interest for different applications in nanophotonics. In this work we report the results of a comprehensive study on the nonlinear optical properties of two kinds of plasmonic metamaterials, i.e., honeycomb nanoprism arrays and multilayer hyperbolic metamaterials, which proved to have a very rich spectrum of parameters (as metamaterials morphology and composition, wavelength and polarization of an input beam) to exploit for controlling their nonlinear response over a broad spectral range.

Controlled Growth of the Non-centrosymmetric Zn(3-ptz)2 and Zn(Oh)(3-ptz) Metal-organic Frameworks

2019 ◽  
Author(s):  
javier enriquez ◽  
Ignacio Chi-Duran ◽  
Carolina Manquian ◽  
Felipe Herrera ◽  
Ruben Fritz ◽  
...  
Keyword(s):  
Single Crystal ◽  
Nonlinear Optical ◽  
Metal Organic Frameworks ◽  
Molar Ratio ◽  
Thermal Synthesis ◽  
Small Crystals ◽  
Alkaline Environments ◽  
Potential Applications ◽  
Metal Organic ◽  
Long Rod

Non-centrosymmetric single-crystal metal-organic frameworks (MOF) are promising candidates for phase-matched nonlinear optical communication, but typical hydrothermal synthesis produces small crystals with relatively low transmittance and poor phase matching. We study the effect of the metal-to-ligand molar ratio and reaction pH on the hydro-thermal synthesis of the non-centrosymmetric Zn(3-ptz)<sub>2</sub> and Zn(OH)(3-ptz) MOFs with <i>in-situ </i>ligand formation. In acidic environments, we find that decreasing the amount of ligand below the stoichiometric molar ratio 1:2 also produces highly transparent single-crystal octahedrons of <b>Zn(3-ptz)<sub>2</sub></b>. In alkaline environments, we obtain long rod-like <b>Zn(OH)(3-ptz) </b>crystals whose length exceeds previous reports by up to four orders of magnitude. Potential applications of these results in the development of MOF-based nonlinear optical devices are discussed.

scholarly journals Deep Subwavelength Power Concentration-Based Hyperbolic Metamaterials

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Amanpreet Kaur ◽  
Saptarshi Banerjee ◽  
Wangshi Zhao ◽  
Jayanti Venkataraman ◽  
Zhaolin Lu
Keyword(s):  
Electromagnetic Waves ◽  
Light Propagation ◽  
Spot Size ◽  
Diffraction Limit ◽  
Evanescent Waves ◽  
Hyperbolic Metamaterials ◽  
Preferred Direction ◽  
Propagating Waves ◽  
Medium Design ◽  
Collimated Beam

Hyperbolic metamaterials can manipulate electromagnetic waves by converting evanescent waves into propagating waves and thus support light propagation without diffraction limit. In this paper, deep subwavelength focusing (or power concentration) is demonstrated both numerically and experimentally using hyperbolic metamaterials. The results verify that hyperbolic metamaterials can focus a broad collimated beam to spot size of ~λ0/6 using wired medium design for both normal and oblique incidence. The nonmagnetic design, no-cut-off operation, and preferred direction of propagation in these materials significantly reduce the attenuation in electromagnetic waves.

scholarly journals Wavelength dependent nonlinear optical response of tetraphenylethene aggregation-induced emission luminogens

2018 ◽  
Vol 2 (12) ◽  
pp. 2263-2271 ◽  
Author(s):  
Jianbo Xiong ◽  
Xinyue Li ◽  
Chunqing Yuan ◽  
Sergey Semin ◽  
Zhaoquan Yao ◽  
...  
Keyword(s):  
Optical Properties ◽  
Nonlinear Optical ◽  
Theoretical Calculations ◽  
Experimental Results ◽  
Nlo Properties ◽  
Aggregation Induced Emission ◽  
Non Linear ◽  
Potential Applications ◽  
Linear Optical Properties ◽  
Linear Optical

Studies of the non-linear optical properties of classical AIEgens are rare, despite their important potential applications in organic composite photonic circuits. Here, we present experimental results, supported by theoretical calculations, of the non-linear optical (NLO) properties of TPE and its halogenated derivates.

Electronic Structure Study of Metal Complex {1,1’-[ o-Phenylenebis(nitrilomethylidyne)]di-2-naphtholato}Copper(II)

2009 ◽  
Vol 79-82 ◽  
pp. 2207-2210
Author(s):  
Rui Ting Xue ◽  
Shou Gang Chen ◽  
Guan Hui Gao ◽  
Yan Sheng Yin
Keyword(s):  
Optical Properties ◽  
Electronic Structure ◽  
Metal Complex ◽  
Nonlinear Optical ◽  
Dft Method ◽  
Structure Study ◽  
Molecular Orbitals ◽  
Mulliken Charge ◽  
Frontier Molecular Orbitals ◽  
Potential Applications

The complex {1,1’-[ o-phenylenebis (nitrilomethylidyne) ] di-2-naphtholato} copper(II) was optimized by the DFT method at B3LYP/LANL2DZ level, and the frontier molecular orbitals, natural bond orbitals, nonlinear optical properties and Mülliken charge population of the optimized complex were exploited and analyzed. The calculated results show that the complex has stable structure and it keeps some potential applications in optic materials field.

Nonlinear Optical Microscopy for Imaging Patterned Self-Assembled Monolayers

1996 ◽  
Vol 440 ◽  
Author(s):  
L. Smilowitz ◽  
Q.X. Jia ◽  
X. Yang ◽  
D.Q. Li ◽  
D. McBranch ◽  
...  
Keyword(s):  
Nonlinear Optical ◽  
Second Harmonic ◽  
Self Assembled Monolayers ◽  
Optical Technique ◽  
Nonlinear Optical Microscopy ◽  
Surface Sensitivity ◽  
Surfaces And Interfaces ◽  
Assembled Monolayers ◽  
Potential Applications ◽  
Self Assembled

AbstractWe have used the inherent surface sensitivity of second harmonic generation (SHG) to develop an instrument for nonlinear optical (NLO) microscopy of surfaces and interfaces. This optical technique is ideal for imaging nanometer thick self-assembled monolayers (SAM's) which have been patterned using photolithographic techniques. In this paper we demonstrate the application of SHG microscopy to patterned SAM's of the noncentrosymmetric molecule calixarene and discuss other potential applications for this new technique.

scholarly journals Nonlinear Optical Characteristics of Crystal VioletDye Doped Polystyrene Films by Using Z-Scan Technique

2017 ◽  
Vol 27 (5) ◽  
pp. 83 ◽  
Author(s):  
Mahasin F. Hadi ◽  
Eman Mohi Alwaan ◽  
Wafaa Hameed Abass
Keyword(s):  
Nonlinear Optical ◽  
Laser Light ◽  
Nonlinear Refraction ◽  
Closed Aperture ◽  
Experimental Conditions ◽  
Light Pulses ◽  
Reverse Saturation Absorption ◽  
Self Focusing ◽  
Saturation Absorption ◽  
Doping Ratio

Z-scan technique was employed to study the nonlinear optical properties (nonlinear refractive index and nonlinear absorption coefficient) for crystal violet doped polystyrene films as a function of doping ratio in chloroform solvent. Samples exhibits in closed aperture Z-scan positive nonlinear refraction (self-focusing). While in the open aperture Z-scan gives reverse saturation absorption (RSA) (positive absorption) for all film with different doping ratio making samples candidates for optical limiting devices for protection of sensors and eyes from energetic laser light pulses under the experimental conditions.

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