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Fiber Raman Amplifiers and Fiber Raman Lasers [PDF]

open access: yesMicromachines, 2020
Stimulated Raman scattering (SRS) is a nonlinear optical effect, observed for the first time in 1962, which lies at the heart of fiber Raman amplifiers and fiber Raman lasers [...]
openaire   +4 more sources

Study of dynamical heterogeneities in colloidal nanoclay suspensions approaching dynamical arrest

open access: yesScientific Reports, 2017
The dynamics of aqueous Laponite clay suspensions slow down with increasing sample waiting time (t w ). This behavior, and the material fragility that results, closely resemble the dynamical slowdown in fragile supercooled liquids with decreasing ...
Paramesh Gadige   +3 more
doaj   +1 more source

X-Ray Flares in the Long-term Light Curve of Low-luminosity Active Galactic Nucleus M81*

open access: yesThe Astrophysical Journal, 2023
Most active galactic nuclei at the center of the nearby galaxies have supermassive black holes accreting at sub-Eddington rates through hot accretion flows or radiatively inefficient accretion flows, which efficiently produce jets.
Gunjan Tomar, Nayantara Gupta
doaj   +1 more source

Comparative Review of Instrumental Techniques and Methods for the Analysis of Microplastics in Agricultural Matrices

open access: yesMicroplastics, 2023
Microplastics (MPs) are ubiquitous and evasive in nature. They can be found in complex agricultural matrices like soil and compost. In the literature, extracting MPs from soil is more prevalent; nonetheless, the same instruments in extraction in soil ...
Adeola Adelugba, Chijioke Emenike
doaj   +1 more source

Synopsis of a Treasure. A Transdisciplinary Study of Medieval Gold Workings Biographies

open access: yesOpen Archaeology, 2023
The article aims to show how a transdisciplinary approach can contribute to a better understanding of the composite biography of a precious object. The study focuses on the Cintola del Duomo (Museum of the Opera del Duomo, Pisa), one of the most famous ...
Martiniello Stefania   +4 more
doaj   +1 more source

Enhancement in structural, morphological, and optical properties of copper oxide for optoelectronic device applications

open access: yesNanotechnology Reviews, 2022
In this study, copper oxide (CuO) specimens were successfully prepared by the hydrothermal process at altered calcination temperatures; 350, 450, and 550°C.
Saleem Shahroz   +11 more
doaj   +1 more source

Measuring the deviation from the superposition principle in interference experiments

open access: yesNew Journal of Physics, 2018
The Feynman path integral formalism has long been used for calculations of probability amplitudes. Over the last few years, it has been extensively used to theoretically demonstrate that the usual application of the superposition principle in slit based ...
G Rengaraj   +4 more
doaj   +1 more source

Silicon Raman polarizer

open access: yesOptics Letters, 2012
We theoretically investigate the polarization properties of Raman amplifiers based on silicon-on-insulator waveguides, and show that it is possible to realize a waveguide Raman polarizer. The Raman polarizer is a special type of Raman amplifier with the property of producing an amplified and highly repolarized beam when it is fed by a relatively weak ...
KOZLOV, Victor, WABNITZ, Stefan
openaire   +4 more sources

Novel banana-discotic hybrid architectures

open access: yesBeilstein Journal of Organic Chemistry, 2009
Here we present the design and synthesis of novel banana-discotic dimers and banana-bridged discotic dimers. The chemical structures have been characterized by spectral techniques and elemental analysis.
Hari Krishna Bisoyi   +2 more
doaj   +1 more source

Structural and multiferroic properties of (Sm, Mn) co-doped BiFeO3 materials

open access: yesAIMS Materials Science, 2020
Pure BiFeO3 (BFO) and (Sm, Mn) co-doped materials were synthesized by the citrate method. Effects of (Sm, Mn) co-doping on the structural, magnetic, electrical and ferroelectric properties of the BFO materials were characterized and investigated by ...
Dao Viet Thang   +3 more
doaj   +1 more source

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