Results 31 to 40 of about 4,093,256 (305)

The Two-Photon Absorption Cross-Section Studies of CsPbX₃ (X = I, Br, Cl) Nanocrystals

Nanomaterials, 2020
The CsPbX3 nanocrystals (NCs) with X = I, Br, Cl, or the mixture of Br:I and Br:Cl in a 1:1 ratio were synthesized and characterized by TEM, DLS, and XRD.
Janusz Szeremeta, Magda A. Antoniak, Dominika Wawrzyńczyk, Marcin Nyk, Marek Samoć   +4 more
doaj   +1 more source

Optical Characteristics of Vitamin D3 Soft Gel

Iraqi Journal of Physics, 2021
In this work, the linear properties of Vitamin D3-5000IU soft gel were investigated by measuring its absorption and fluorescence spectra. It was observed that there was a shift towards longer wavelength within limits (75 nm), with quantitative efficiency
Hanaa M. Yaseen, Slafa I. Ibrahim, Rajaa Nader Ketan   +2 more
doaj   +1 more source

Size Dependence of the Resonant Third-Order Nonlinear Refraction of Colloidal PbS Quantum Dots

Photonics, 2020
Due to their high resonant third-order nonlinear response, lead sulfide quantum dots (QDs) are potential materials for applications in the field of nonlinear optics.
Ivan D. Skurlov, Evgeniia A. Ponomareva, Azat O. Ismagilov, Sergey E. Putilin, Ilia A. Vovk, Anastasiia V. Sokolova, Anton N. Tcypkin, Aleksandr P. Litvin   +7 more
doaj   +1 more source

Z-Scan theory for thin film measurements: Validation of a model beyond the standard approach using ITO and HfO2

Optical Materials: X, 2023
The Z-Scan technique is an easy and widespread approach to evaluate the nonlinear optical coefficient of materials. However, the evaluation of the same coefficients for thin films requires complex experimental setups that allow to remove the ...
Andrea Tognazzi, Paolo Franceschini, Thi Ngoc Lam Tran, Alessandro Chiasera, Maria Antonietta Vincenti, Alfonso Carmelo Cino, Neset Akozbek, Michael Scalora, Costantino De Angelis   +8 more
doaj   +1 more source

Sensitivity optimization of the one beam Z-scan technique and a Z-scan technique immune to nonlinear absorption

Optics Express, 2013
It is presented a criteria for selecting the optimum aperture radius for the one beam Z-scan technique (OBZT), based on the analysis of the transmittance of the aperture. It is also presented a modification to the OBZT by directly measuring the beam radius in the far field with a rotating disk, which allows to determine simultaneously the non-linear ...
José A, Dávila Pintle, Edmundo Reynoso, Lara, Marcelo D, Iturbe Castillo   +2 more
openaire   +2 more sources

Study of Impulsive Stimulated Raman Scattering Effects Using the Femtosecond Pump–Probe Z-Scan Technique

Applied Sciences, 2021
Impulsive stimulated Raman scattering (ISRS) is a nonlinear pump–probe spectroscopy technique particularly suitable to study vibrational intermolecular and intramolecular modes in complex systems.
Mauro Falconieri, Serena Gagliardi, Flaminia Rondino, Michele Marrocco, Waruna D. Kulatilaka   +4 more
doaj   +1 more source

D4σ nonlinear measurement inside a 4f-Z-scan system [PDF]

, 2013
The D4σ method using a 4f-Z-scan system is presented in order to increase the sensitivity and the resolution in Z-scan measurements.
de Araújo, Cid, Cid B. de Araújo, C.B. de Araújo, Leblond, H., Cassagne, C., G. Boudebs, C. Cassagne, Besse, V., V. Besse, H. Leblond, Boudebs, Georges   +10 more
core   +1 more source

Third-order nonlinear optical responses of CuO nanosheets for ultrafast pulse generation

Journal of Materiomics, 2022
As a representative transition metal oxide, cupric oxide (CuO) has attracted a lot of interest in miscellaneous fields. In the present work, the prominent third-order nonlinear optical (NLO) features of CuO nanosheets were demonstrated via the typical Z ...
Li Dong, Hongwei Chu, Ying Li, Shengzhi Zhao, Dechun Li   +4 more
doaj   +1 more source

Dark-field Z-scan imaging technique [PDF]

, 2016
We report on Dark-Field Z-scan (DFZ-scan) as a new imaging technique combining Z-scan method with Dark-field microscopy in order to measure optical refraction nonlinearity. Numerical and experimental results are provided to validate this concept.
Wang, Hongzhen, Cassagne, Christophe, C. Cassagne, G. Boudebs, H. Wang, H. Leblond, Leblond, Hervé, Boudebs, Georges   +7 more
core   +1 more source

Passive photonic diodes based on natural van der Waals heterostructures

Nanophotonics, 2020
Van der Waals heterostructures are composed of stacked atomically thin two-dimensional (2D) crystals to provide unprecedented functionalities and novel physics.
Li Jie, Du Lin, Huang Jing, He Yuan, Yi Jun, Miao Lili, Zhao Chujun, Wen Shuangchun   +7 more
doaj   +1 more source