scholarly journals Linear and nonlinear optical properties of hybrid metallic–dielectric plasmonic nanoantennas

2016 ◽  
Vol 7 ◽  
pp. 111-120 ◽  
Author(s):  
Mario Hentschel ◽  
Bernd Metzger ◽  
Bastian Knabe ◽  
Karsten Buse ◽  
Harald Giessen
Keyword(s):  
Refractive Index ◽  
Optical Properties ◽  
Nonlinear Optical ◽  
Nonlinear Response ◽  
High Efficiency ◽  
Dielectric Materials ◽  
Nonlinear Optical Properties ◽  
Linear Optical Properties ◽  
Linear And Nonlinear ◽  
Linear Optical

We study the linear and nonlinear optical properties of hybrid metallic–dielectric plasmonic gap nanoantennas. Using a two-step-aligned electron beam lithography process, we demonstrate the ability to selectively and reproducibly fill the gap region of nanoantennas with dielectric nanoparticles made of lithium niobate (LiNbO3) with high efficiency. The linear optical properties of the antennas are modified due to the large refractive index of the material. This leads to a change in the coupling strength as well as an increase of the effective refractive index of the surrounding. The combination of these two effects causes a red- or blue-shift of the plasmonic modes, respectively. We find that the nonlinear optical properties of the combined system are only modified in the range of one order of magnitude. The observed changes in our experiments in the nonlinear emission can be traced to the changed dielectric environment and thus the modified linear optical properties. The intrinsic nonlinearity of the dielectric used is in fact small when compared to the nonlinearity of the metallic part of the hybrid antennas. Thus, the nonlinear signals generated by the antenna itself are dominant in our experiments. We demonstrate that the well-known nonlinear response of bulk dielectric materials cannot always straightforwardly be used to boost the nonlinear response of nanoscale antenna systems. Our results significantly deepen the understanding of these interesting hybrid systems and offer important guidelines for the design of nanoscale, nonlinear light sources.

New Borate Structures for Nlo Applications

1993 ◽  
Vol 329 ◽  
Author(s):  
Douglas A. Keszler ◽  
Annapoorna Akella ◽  
Kathleen I. Schaffers ◽  
Theodore Alekel
Keyword(s):  
Optical Properties ◽  
Solid State ◽  
Nonlinear Optical ◽  
Nonlinear Optical Properties ◽  
Linear Optical Properties ◽  
Linear And Nonlinear ◽  
Linear Optical ◽  
Optical Applications ◽  
Nonlinear Optical Applications

AbstractBy considering selected examples of new structure types, guidelines are set forth for the synthesis of new solid-state inorganic borates that are likely to have desirable properties for nonlinear optical applications. The structures of two new, noncentrosymmetric orthoborate fluorides BaCaBO3F and Ba7(BO3)3F5 demonstrate a feasibility for controlling linear optical properties and for producing noncentrosymmetric borates that melt congruently. The structure of SrLi(B3O5)3 represents an additional example of a noncentrosymmetric borate resulting from chirality of the B3O7 ring. In addition to potential practical value, crystals of the type AMOB2O5 (A = K, Rb, and Cs; M = Nb and Ta) provide a unique means for examining the structural dependent interrelationships of linear and nonlinear optical properties.

A supra-molecular switchable dielectric material with non-linear optical properties

2017 ◽  
Vol 5 (11) ◽  
pp. 2865-2870 ◽  
Author(s):  
Tariq Khan ◽  
Muhammad Adnan Asghar ◽  
Zhihua Sun ◽  
Aurang Zeb ◽  
Chengmin Ji ◽  
...  
Keyword(s):  
Optical Properties ◽  
Molecular Crystal ◽  
Nonlinear Optical ◽  
Dielectric Material ◽  
Nonlinear Optical Properties ◽  
Optical Material ◽  
Non Linear ◽  
Linear Optical Properties ◽  
Linear Optical

A supra-molecular crystal, 1-[C6H13NH][18-crown-6][ClO4] monohydrate, has been reported to show reversible dielectric anomalies and nonlinear optical properties, which suggests that it could be conceived as the potential switchable dielectric and non-linear optical material.

scholarly journals Modulation of benzofuran structure as a fluorescent probe to optimize linear and nonlinear optical properties and biological activities

2020 ◽  
Vol 26 (10) ◽  
Author(s):  
Przemysław Krawczyk
Keyword(s):  
Optical Properties ◽  
Nonlinear Optical ◽  
Nonlinear Response ◽  
Biological Activities ◽  
Aldehyde Group ◽  
Biological Imaging ◽  
Nonlinear Optical Properties ◽  
Donor And Acceptor ◽  
Structure Modulation ◽  
Linear And Nonlinear

Abstract The study presents the influence of structure modulation by introducing selected donor and acceptor substituents on optical properties of benzofuran used in biological imaging. As the starting form, 2-(5-formylbenzofuran-2-yl)acetamide described experimentally was used. This molecule contains an aldehyde group as reactive site, through which conjugation with protein occurs. Structure modulation was carried out by attaching additional electron-donating and electron-withdrawing substituents to the amino group, namely -NH2, -NHCH3, -NO2, -OH, and -OCH3. Studies have shown that the -NH2, -NHCH3, -OH, and -OCH3 substituents do not induce a significant change in the position of maximum absorption and fluorescence relative to each other. They also do not change the parameters describing the nonlinear response. Only the presence of the -NO2 substituent results in significant solvatochromic shifts. Changing substituents also does not significantly affect the LD50 value, and all tested fluorescent probes should not be considered toxic to humans. Modulation of the benzofuran derivative structure also does not change the active center in which the biocomplex with the protein is formed. In each case, the conjugation takes place via LYS114. In addition, the study was prompted to analyze the linear and nonlinear optical properties of conjugates formed after the reaction with Concanavalin A. Graphical abstract

scholarly journals Linear and Nonlinear Optical Properties of Metal Nanocluster-Silica Composites Formed by Sequential Implantation of Ag And Cu

1994 ◽  
Vol 354 ◽  
Author(s):  
R.A. Zuhr ◽  
R.H. Magruder.III ◽  
T.A. Anderson ◽  
D.O. Osborne
Keyword(s):  
Optical Properties ◽  
Nonlinear Optical ◽  
Nonlinear Response ◽  
Effective Medium Theory ◽  
Nonlinear Optical Properties ◽  
Medium Theory ◽  
Glass Composites ◽  
Metal Nanocluster ◽  
Linear And Nonlinear ◽  
Cu Ions

AbstractMetal nanocluster-glass composites demonstrate unique optical properties and significant nonlinear response. In this work nanometer dimension metal colloids were formed in silica by sequential implantation of Ag and Cu ions. The Ag and Cu were implanted with relative ratios of Ag to Cu of 9:3,6:6, and 3:9 at a total nominal dose of 12xl016 ions/cm2. TEM techniques were used to examine colloid size and size distributions. The linear optical response was measured from 200 to 900 nm, while the nonlinear optical properties were measured using the z-scan technique at a wavelength of 570 nm. The linear and nonlinear optical properties were found to be dependent upon the ratio of sequentially implanted Ag to Cu and are consistent with effective medium theory.

Synthesis, characterization, third-order non-linear optical properties and DFT studies of novel SUBO bridged ball-type metallophthalocyanines

2020 ◽  
Vol 49 (47) ◽  
pp. 17263-17273
Author(s):  
Shabnam Alizadeh ◽  
Gülşen Kösoğlu ◽  
Murat Erdem ◽  
Nursel Açar-Selçuki ◽  
Metin Özer ◽  
...  
Keyword(s):  
Optical Properties ◽  
Nonlinear Optical ◽  
Nonlinear Optical Properties ◽  
Dft Studies ◽  
Third Order ◽  
Non Linear ◽  
Linear Optical Properties ◽  
Linear Optical

Novel SUBO bridged ball-type metallophthalocyanines were synthesized. NLA of the complexes indicated that BTCuPc has significantly better nonlinear optical properties. DFT was used for geometry optimizations and optical analyses.

Preparation and Property of Alkynyl Substituted Azobenzene Optical Limiting Materials

2014 ◽  
Vol 787 ◽  
pp. 326-331
Author(s):  
Lin Feng Li ◽  
Hong Yao Xu
Keyword(s):  
Optical Properties ◽  
Methyl Ester ◽  
Nonlinear Optical ◽  
Optical Limiting ◽  
Nonlinear Optical Properties ◽  
Optical Coefficient ◽  
Linear Optical Properties ◽  
Nonlinear Optical Coefficient ◽  
Linear Optical

An novel nonlinear optical alkynyl substituted azobenzene 4-(propargyl methyl ester)-4'-[(N,N'-diethyl) amino] azobenzene was synthesized and characterized by FTIR, 1HNMR. The linear optical properties were investigated by UV-Vis spectra. The nonlinear optical properties and optical limiting properties were investigated using 21 ps pulse at 532nm and 4ns pulse at 532nm, respectively. The results show that this novel nonlinear optical alkynyl substituted azobenzene possesses large third nonlinear optical coefficient and good optical limiting properties.

Linear and Nonlinear Optical Properties of Small Silicon Clusters

1990 ◽  
Author(s):  
Tapio T. Rantala ◽  
Mark I. Stockman ◽  
Daniel A. Jelski ◽  
Thomas F. George
Keyword(s):  
Optical Properties ◽  
Nonlinear Optical ◽  
Nonlinear Optical Properties ◽  
Silicon Clusters ◽  
Linear And Nonlinear
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