Results 21 to 30 of about 65,086 (261)

Wavelength-Dependent Nonlinear Absorption in Palladium Nanoparticles

open access: yesApplied Sciences, 2021
This paper aims to study the nonlinear absorption characteristics of palladium nanoparticles (PdNPs) at off-resonant wavelengths. For this purpose, multi-wavelength (500–650 nm) nanosecond Z-scan technique was used. The experimental results indicate that
Chunyu Chen, Jun Wang, Yachen Gao
doaj   +1 more source

Silver Nanoparticles under Nanosecond Pulsed Laser Excitation as an Intensity Sensitive Saturable Absorption to Reverse Saturable Absorption Switching Material

open access: yesPhotonics, 2021
Optical nonlinearity involved switching draws an important consideration in nonlinear optical studies. Based on that, we explored nonlinear absorption processes in silver nanoparticles synthesized by liquid phase laser ablation technique employing a ...
Edappadikkunnummal Shiju   +5 more
doaj   +1 more source

Nonlinear Absorption Microscopy [PDF]

open access: yesPhotochemistry and Photobiology, 2009
AbstractFor the past two decades, nonlinear microscopy has been developed to overcome the scattering problem in thick tissue imaging. Owing to its increased imaging depth and high spatial resolution, nonlinear microscopy becomes the first choice for imaging living tissues. The use of nonlinear optical effects not only facilitates the signal originating
Tong, Ye, Dan, Fu, Warren S, Warren
openaire   +2 more sources

Nonlinear Optical Characterization of InP@ZnS Core-Shell Colloidal Quantum Dots Using 532 nm, 10 ns Pulses

open access: yesNanomaterials, 2021
InP@ZnS core-shell colloidal quantum dots (CQDs) were synthesized and characterized using the z-scan technique. The nonlinear refraction and nonlinear absorption coefficients (γ = −2 × 10−12 cm2 W−1, β = 4 × 10−8 cm W−1) of these CQDs were determined ...
Rashid A. Ganeev   +5 more
doaj   +1 more source

The Characterization of Absorptive Nonlinearities [PDF]

open access: yesLaser & Photonics Reviews, 2017
AbstractThe measurement of the order and magnitude of absorptive nonlinearities is essential to the development and improvement of a wide range of optical materials. This review presents and contrasts some of the most commonly used methods for making such measurements.
Nikolaos Liaros, John T. Fourkas
openaire   +1 more source

Interfacial Charge Transfer and Ultrafast Photonics Application of 2D Graphene/InSe Heterostructure

open access: yesNanomaterials, 2022
Interface interactions in 2D vertically stacked heterostructures play an important role in optoelectronic applications, and photodetectors based on graphene/InSe heterostructures show promising performance nowadays.
Jialin Li   +6 more
doaj   +1 more source

Investigation of Nonlinear Optical Processes in Mercury Sulfide Quantum Dots

open access: yesNanomaterials, 2022
The authors report the third-harmonic generation, nonlinear refraction, and nonlinear absorption in HgS quantum dot (QD) suspensions and films using the nanosecond and femtosecond pulses.
Vyacheslav V. Kim   +10 more
doaj   +1 more source

Siloxene Nanosheets and Their Hybrid Gel Glasses for Broad-Band Optical Limiting

open access: yesMolecules, 2023
With the development of laser technology, the research of novel laser protection materials is of great significance. In this work, dispersible siloxene nanosheets (SiNSs) with a thickness of about 1.5 nm are prepared by the top-down topological reaction ...
Xugui Lv   +5 more
doaj   +1 more source

Investigations on the Nonlinear Optical Properties of 0D, 1D, and 2D Boron Nitride Nanomaterials in the Visible Spectral Region

open access: yesNanomaterials, 2023
In recent years, boron nitride nanomaterials have attracted increasing attention due to their unique properties such as high temperature stability and high thermal conductivity.
Stefanie Dengler, Bernd Eberle
doaj   +1 more source

Controlling light with light in silver-nanospheres and gold-nanorods colloids

open access: yesMundo Nano, 2019
A review is presented on recent research that demonstrate the control of light-by-light in colloids containing silver-nanospheres (Ag-NS) and gold-nanorods (Au-NR).
Cid B. de Araújo   +2 more
doaj   +1 more source

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