Results 1 to 10 of about 272,023 (314)

Unresonant interaction of laser beams with microdroplets [PDF]

Journal of the European Optical Society-Rapid Publications, 2012
The interaction of distilled water droplets (volumes of 3-4 µl) with pulsed laser beams emitted at 532 nm is described. At 532 nm the distilled water absorption is very low and the interaction of a water droplet with the laser radiation is dominated by ...
Pascu M. L., Popescu G. V., Ticos C. M., Andrei I. R.   +3 more
doaj   +1 more source

Lead-Free Perovskite Thin Films for Gas Sensing through Surface Acoustic Wave Device Detection

Nanomaterials, 2023
Thin film technology shows great promise in fabricating electronic devices such as gas sensors. Here, we report the fabrication of surface acoustic wave (SAW) sensors based on thin films of (1 − x) Ba(Ti0.8Zr0.2)O3−x(Ba0.7Ca0.3)TiO3 (BCTZ50, x = 50) and ...
Nicoleta Enea, Valentin Ion, Cristian Viespe, Izabela Constantinoiu, Anca Bonciu, Maria Luiza Stîngescu, Ruxandra Bîrjega, Nicu Doinel Scarisoreanu   +7 more
doaj   +1 more source

Non-destructive methods for fruit quality evaluation

Scientific Reports, 2021
This work studies the evolution in time of several varieties of apples with application in quality storage maintenance. Two different methods were used to evaluate long-stored apples for better sorting and degradation assessment.
Ana-Maria Bratu, Cristina Popa, Mihaela Bojan, Petre Catalin Logofatu, Mioara Petrus   +4 more
doaj   +1 more source

Monochromatic light measurement via geometric phase and Fourier-transform spectroscopy method

Scientific Reports, 2022
The paper introduces a method for the measurement of monochromatic light using the geometric phase shift in a polarizing interferometer and applying the Fourier transform spectroscopy method.
Florin Garoi, Ionut Nicolae, Petronela Prepelita   +2 more
doaj   +1 more source

Implementation of Ag/ SiO2 nanofilms for metamaterial engineering

Results in Physics, 2022
Low dimensions of the nanostructured thin films are essential in applications of miniaturized optical systems. Noble metal thin films of different thicknesses (4–10 nm) were obtained by radio frequency magnetron sputtering (rfMS) with controlled ...
Petronela Prepelita, Florin Garoi, Marius Dumitru, Valentin Craciun   +3 more
doaj   +1 more source

Laser guiding for GeV laser–plasma accelerators [PDF]

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2006
Guiding of relativistically intense laser beams in preformed plasma channels is discussed for development of GeV-class laser accelerators. Experiments using a channel guided laser wakefield accelerator at Lawrence Berkeley National Laboratory (LBNL) have demonstrated that near mono-energetic 100 MeV-class electron beams can be produced with a 10 TW ...
Leemans, Wim, Esarey, Eric, Geddes, Cameron, Schroeder, C.B., Toth, Csaba   +4 more
openaire   +3 more sources

Optical spectrum behaviour of a coupled laser system under chaotic synchronization conditions [PDF]

Journal of the European Optical Society-Rapid Publications, 2013
Synchronization characteristics of two bidirectionally coupled semiconductor lasers, one operating in a chaotic regime with low-frequency fluctuations and the other with free laser beam emission, were experimentally investigated.
Andrei I. R., Popescu G. V., Pascu M. L.
doaj   +1 more source

Controlling the characteristics of injected and accelerated electron bunch in corrugated plasma channel by temporally asymmetric laser pulses

Scientific Reports, 2022
In laser-driven plasma wakefield accelerators, the accelerating electric field is orders of magnitude stronger than in conventional radio-frequency particle accelerators, but the dephasing between the ultrarelativistic electron bunch and the wakefield ...
M. Sedaghat, A. Amouye Foumani, A. R. Niknam   +2 more
doaj   +1 more source

Laser shaping and optimization of the laser-plasma interaction [PDF]

AIP Conference Proceedings, 2001
The physics of energy transfer between the laser and the plasma in laser wakefield accelerators is studied. We find that wake excitation by arbitrary laser shapes can be parameterized using the total pulse energy and pulse depletion length. A technique for determining laser profiles that produce the required plasma excitation is developed. We show that
Spitkovsky, Anatoly, Chen, Pisin
openaire   +2 more sources

Experimental observation of backscattered light based on different coherence between incident laser beams

High Power Laser Science and Engineering, 2013
Recent experimental results on NIF revealed a much higher stimulated Brillouin scattering (SBS) and stimulated Raman scattering (SRS) backscatter than expected; one possible reason was due to the coherence between incident laser beams.
Xiangfu Meng, Chen Wang, Honghai An, Guo Jia, Huazhen Zhou, Sizu Fu   +5 more
doaj   +1 more source