scholarly journals Unidirectional Optical Kerr Transmittance in Hierarchical Carbon/Platinum Nanostructures

Photonics ◽  
2020 ◽  
Vol 7 (3) ◽  
pp. 54 ◽  
Author(s):  
Samuel Morales-Bonilla ◽  
Cecilia Mercado-Zúñiga ◽  
Juan Pablo Campos-López ◽  
César Carrillo-Delgado ◽  
Claudia Lizbeth Martínez-González ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Nonlinear Optical ◽  
Volume Fraction ◽  
Multiwall Carbon Nanotubes ◽  
Photon Absorption ◽  
Chemical Vapor Deposition Method ◽  
Wave Mixing ◽  
Third Order ◽  
Single Beam ◽  
Two Wave Mixing

A strong contrast in the third-order nonlinear optical effects exhibited by hierarchical nanostructures explored in a bidirectional optical circuit is reported. The samples were integrated by multiwall carbon nanotubes and platinum-decorated carbon nanotubes synthetized by an aerosol pyrolysis technique and followed by a chemical vapor deposition method. Coupled and decoupled third-order nonlinear optical properties of the nanocomposites were studied. A nanosecond two-wave mixing experiment at 532 nm wavelength was conducted to analyze the optical Kerr effect in the samples. Multi-photonic interactions were evaluated by a single-beam transmittance as a function of input irradiance and volume fraction of the nanoparticles integrated in the nanohybrids. A two-photon absorption process was identified as the main physical mechanism responsible for the anisotropy in the observed optical nonlinearities. Random carbon nanotube networks in film form were put on top of platinum-decorated carbon nanotubes in order to build up a bilayer sample featuring optical selectivity. The switching of optical signals in propagation through the samples was obtained by an orientation-selectable optical transmittance. Unidirectional optically controlled laser pulses dependent on irradiance and polarization in a two-wave mixing was proposed with potential nanophotonic and nanoelectronic applications. The design of signal processing functions driven by nanohybrid platforms can be contemplated.

Structured light using carbon nanostructures driven by Kerr nonlinearities and a magnetic field

2021 ◽  
Author(s):  
Eric A. Hurtado-Aviles ◽  
Maria Vila ◽  
Juan José Vilatela ◽  
Hilario Martines-Arano ◽  
Jhovani Bornacelli ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Carbon Nanotubes ◽  
Carbon Nanostructures ◽  
Nonlinear Optical ◽  
Wave Mixing ◽  
Substantial Influence ◽  
Third Order ◽  
The Third ◽  
Aligned Carbon Nanotubes ◽  
Two Wave Mixing

A substantial influence of a magnetic field on the third-order nonlinear optical properties exhibited by aggregated networks of aligned carbon nanotubes (CNT) is reported by systematic measurements. A two-wave mixing...

scholarly journals Mechanooptic Regulation of Photoconduction in Functionalized Carbon Nanotubes Decorated with Platinum

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
C. Mercado-Zúñiga ◽  
C. Torres-Torres ◽  
M. Trejo-Valdez ◽  
R. Torres-Martínez ◽  
S. Tarrago-Velez ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Optical Absorption ◽  
Nonlinear Optical ◽  
Multiwall Carbon Nanotubes ◽  
Chemical Vapor ◽  
Photon Absorption ◽  
Chemical Vapor Deposition Method ◽  
Silica Substrate ◽  
Nonlinear Optical Absorption ◽  
Platinum Particles

The observation of photoconduction and nonlinear optical absorption on functionalized multiwall carbon nanotubes decorated with platinum is reported. The samples were prepared by a chemical vapor deposition method. The electrical conductivity of the carbon nanotubes seems to be decreased by the functionalization process; but this property is strongly enhanced after the incorporation of platinum particles. Nonresonant photoconductive experiments at 532 nm and 445 nm wavelengths allow us to detect a selective participation of the platinum to the photoelectrical response. A mechanooptic effect based on Fresnel reflection was obtained through a photoconductive modulation induced by the rotation of a silica substrate where the samples were deposited as a thin film. A two-photon absorption process was identified as the main physical mechanism responsible for the nonlinear optical absorption. We consider that important changes in the nonlinear photon interactions with carbon nanotubes can be related to the population losses derived from phonons and the detuning of the frequency originated by functionalization.

scholarly journals Navigation of Silver/Carbon Nanoantennas in Organic Fluids Explored by a Two-Wave Mixing

Nanomaterials ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1886
Author(s):  
Geselle García-Beltrán ◽  
Cecilia Mercado-Zúñiga ◽  
Christopher René Torres-SanMiguel ◽  
Martín Trejo-Valdez ◽  
Isaela Villalpando ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Ag Nanoparticles ◽  
Laser System ◽  
Multiwall Carbon Nanotubes ◽  
Logic Gates ◽  
Wave Mixing ◽  
Optical Logic ◽  
Third Order ◽  
Nanosecond Pulses ◽  
Two Wave Mixing

Within this work are analyzed third-order nonlinear optical properties with a potential influence on the dynamic mechanics exhibited by metal/carbon nanofluids. The nanofluids were integrated by multiwall carbon nanotubes decorated with Ag nanoparticles suspended in ethanol or in acetone. Optical third-order nonlinearities were experimentally explored by vectorial two-wave mixing experiments with a Nd-YAG laser system emitting nanosecond pulses at a 532 nm wavelength. An optically induced birefringence in the metal/organic samples seems to be responsible for a significant modification in density and compressibility modulus in the nanosystems. The measured nonlinear refractive index was associated with a thermal process together with changes in density, compressibility modulus and speed of sound in the samples. Nanofluid diffusivity was studied to characterize the dynamic concentration gradients related to the precipitation of nanostructures in the liquid solutions. The evolution of the nanoparticle density suspended in the nanofluids was considered as a temporal-resolved probabilistic system. It is stated that the incorporation of Ag nanoparticles in carbon nanotubes produces strong mechanical changes in carbon-based nanofluids. According to numerical simulations and optical evaluations, immediate applications for developing dynamic nanoantennas optical logic gates and quantum-controlled metal/carbon systems can be contemplated.

scholarly journals Tunable Nonlinear Optical Property of MnS Nanoparticles with Different Size and Crystal Form

Nanomaterials ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 34
Author(s):  
Zhihao Zhang ◽  
Pengchao Li ◽  
Yuzong Gu
Keyword(s):  
Optical Property ◽  
Nonlinear Optical ◽  
Nonlinear Optical Property ◽  
Nonlinear Refraction ◽  
Synthesis Method ◽  
Crystal Form ◽  
Optical Nonlinearity ◽  
Photon Absorption ◽  
Third Order ◽  
Crystal Forms

It is significant to study the reason that semiconductor material has adjustable third-order optical nonlinearity through crystal form and dimensions are changed. αMnS nanoparticles with different crystal forms and sizes were successfully prepared by one-step hydrothermal synthesis method and their size-limited third-order nonlinear optical property was tested by Z-scan technique with 30 ps laser pulses at 532 nm wavelength. Nanoparticles of different crystal forms exhibited different NLO (nonlinear optical) responses. γMnS had stronger NLO response than αMnS because of higher fluorescence quantum yield. Two-photon absorption and the nonlinear refraction are enhanced as size of nanoparticlesreduced. The nanoparticles had maximum NLO susceptibility which was 3.09 × 10−12 esu. Susceptibility of αMnS increased about nine times than that of largest nanoparticles. However, it was reduced when size was further decreased. This trend was explained by the effects of light induced dipole moments. And defects in αMnS nanoparticles also had effect on this nonlinear process. MnS nanoparticles had potential application value in optical limiting and optical modulation.

Theoretical and Experimental Studies of Third-Order Nonlinear Optical Susceptibilities of New p-N,N'-Diamethylaniline Tetrathiafulvalene Derivatives

2000 ◽  
Vol 660 ◽  
Author(s):  
B. Sahraoui ◽  
K.J. Pluciński ◽  
M. Makowaska-Janusik ◽  
I. V. Kityk ◽  
M. Salle ◽  
...  
Keyword(s):  
Quantum Chemical Calculations ◽  
Quantum Chemical ◽  
Nonlinear Optical ◽  
Experimental Studies ◽  
Physical Nature ◽  
Four Wave Mixing ◽  
Wave Mixing ◽  
Electronic Contribution ◽  
Optical Nonlinearities ◽  
Third Order

ABSTRACTA study was made of third-order nonlinear optical susceptibilities of new tetrathiafulvalene (TTF) derivatives, using the degenerate four wave mixing (DFWM) method, as well as complex quantum chemical calculations. To understand the physical nature of the optical nonlinearities, we separated their electronic and nuclear contributions. We found that the electronic contribution to these nonlinearities predominated. Our investigations suggest that TTF may be a highly promising material for nonlinear optics (NLO).

Structure, Spectroscopic Study and ab initio Calculations on Third-order Nonlinear Optical Behavior of N-(2-Hydroxy-4-methoxybenzylidene)-3- nitroaniline

2008 ◽  
Vol 63 (11) ◽  
pp. 1315-1320
Author(s):  
Hüseyin Üver ◽  
Aslı Karaka§ ◽  
Ayhan Elmalı ◽  
T. Nuri Durlu
Keyword(s):  
Ab Initio ◽  
Nonlinear Optical ◽  
Photon Absorption ◽  
X Ray Diffraction ◽  
Third Order ◽  
Hartree Fock ◽  
H Nmr ◽  
Calculation Results ◽  
Zero Values ◽  
Optical Behavior

Abstract N-(2-hydroxy-4-methoxybenzylidene)-3-nitroaniline (1) has been synthesized and characterized by X-ray diffraction analysis, FTIR and 1H NMR spectroscopy. The maximum one-photon absorption (OPA) wavelengths recorded by quantum mechanical computations using a configuration interaction (CI) method are estimated in the UV region to be shorter than 450 nm, showing good optical transparency to the visible light. We have computed both dispersion-free (static) and also frequency-dependent (dynamic) linear polarizabilities (α) and second hyperpolarizabilities (γ) by using the time-dependent Hartree-Fock (TDHF) method to provide an insight into the microscopic third-order nonlinear optical (NLO) behavior of the title compound. The ab initio calculation results with non-zero values on (hyper)polarizabilities indicate that the synthesized molecule might possess microscopic third-order NLO phenomena.

Sign in / Sign up

Export Citation Format

Share Document