Generation of second harmonics of relativistically self-focused q-Gaussian laser beams in underdense plasma with axial density ramp
Sign Up to like & getrecommendations! Published in 2021 at "Optical and Quantum Electronics"
DOI: 10.1007/s11082-021-02827-w
Abstract: An investigation on frequency doubling of intense laser beams through the phenomenon of second harmonic generation (SHG) in underdense plasmas has been presented. In order to increase the efficiency of S.H.G the density profile of… read more here.
Keywords: second harmonics; frequency; density; harmonics ... See more keywords
Numerical study on thermal stress cutting of silicon wafers using two-line laser beams
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Mechanical Science and Technology"
DOI: 10.1007/s12206-019-0702-6
Abstract: We propose a method of cleaving silicon wafers using two-line laser beams. The base principle is separating the silicon wafer using crack propagation caused by laser-induced thermal stress. Specifically, this method uses two-line laser beams… read more here.
Keywords: silicon wafers; two line; silicon; line ... See more keywords
Laser operation by kesterite chalcogenide nanocrystals
Sign Up to like & getrecommendations! Published in 2019 at "Optik"
DOI: 10.1016/j.ijleo.2018.09.071
Abstract: Abstract We demonstrate a possibility to vary structural, morphological and optoelectronics parameters for kesterite Cu2ZnSnS4 nanocrystalline films using external laser beams at 1540 nm, and 770 nm or 1064 nm, and 532 nm. The illumination is performed both by… read more here.
Keywords: kesterite chalcogenide; laser; operation kesterite; chalcogenide nanocrystals ... See more keywords
Electron Bernstein wave excitation and heating by nonlinear interactions of Laguerre and Hermite Gaussian laser beams in a magnetized plasma
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DOI: 10.1016/j.ijleo.2020.166212
Abstract: Abstract In this paper, we have studied the nonlinear interaction of Laguerre-Gaussian (LG) and Hermite-Gaussian (HG) laser beams in magnetized plasma, and electron Bernstein wave (EBW) excitation and heating of electron is evaluated. The beat… read more here.
Keywords: electron; bernstein wave; laser beams; electron bernstein ... See more keywords
Experimental study: Underwater propagation of polarized flat top partially coherent laser beams with a varying degree of spatial coherence
Sign Up to like & getrecommendations! Published in 2018 at "Optics Communications"
DOI: 10.1016/j.optcom.2018.04.014
Abstract: Abstract We report on experiments where spatially partially coherent laser beams with flat top intensity profiles were propagated underwater. Two scenarios were explored: still water and mechanically moved entrained salt scatterers. Gaussian, fully spatially coherent… read more here.
Keywords: flat top; laser beams; spatial coherence; coherent laser ... See more keywords
Atom interferometry with top-hat laser beams
Sign Up to like & getrecommendations! Published in 2018 at "Applied Physics Letters"
DOI: 10.1063/1.5051663
Abstract: The uniformity of the intensity and phase of laser beams is crucial to high-performance atom interferometers. Inhomogeneities in the laser intensity profile cause contrast reductions and systematic effects in interferometers operated with atom sources at… read more here.
Keywords: top hat; laser beams; hat laser; intensity ... See more keywords
Generation of attosecond electron packets in the interaction of ultraintense Laguerre - Gaussian laser beams with plasma
Sign Up to like & getrecommendations! Published in 2017 at "Quantum Electronics"
DOI: 10.1070/qel16301
Abstract: The interaction of a thin plasma foil with two counterpropagating circularly polarised Laguerre – Gaussian laser beams of ultra-high intensity is studied using pwarticle-in-cell simulations in a fully three-dimensional geometry. It is found that within… read more here.
Keywords: laser; laser beams; laguerre gaussian; electron packets ... See more keywords
Collective stimulated Brillouin scattering modes of two crossing laser beams with shared ion acoustic wave
Sign Up to like & getrecommendations! Published in 2021 at "Plasma Physics and Controlled Fusion"
DOI: 10.1088/1361-6587/ac301d
Abstract: The overlapping of multiple beams is common in inertial confinement fusion (ICF), making the collective stimulated Brillouin scattering (SBS) with shared ion acoustic wave (IAW) potentially important because of the effectively larger laser intensities to… read more here.
Keywords: stimulated brillouin; laser; laser beams; shared ion ... See more keywords
Characterization of laser beams: theory and application in laser-assisted bonding process
Sign Up to like & getrecommendations! Published in 2021 at "Optical Engineering"
DOI: 10.1117/1.oe.60.6.060801
Abstract: Abstract. The International Organization for Standardization (ISO), in collaboration with the academic community, has developed and published a comprehensive system of standards for the characterization of optical components and laser beams. Our study offers a… read more here.
Keywords: application; characterization; process; laser ... See more keywords
Measuring laser beams with a neural network.
Sign Up to like & getrecommendations! Published in 2022 at "Applied optics"
DOI: 10.1364/ao.443531
Abstract: A deep neural network (NN) is used to simultaneously detect laser beams in images and measure their center coordinates, radii, and angular orientations. A dataset of images containing simulated laser beams and a dataset of… read more here.
Keywords: neural network; laser beams; laser; measuring laser ... See more keywords
Temporally shaped Laguerre-Gaussian femtosecond laser beams.
Sign Up to like & getrecommendations! Published in 2018 at "Applied optics"
DOI: 10.1364/ao.57.003624
Abstract: Femtosecond vortex beams with adjustable temporal pulse shapes are generated. These shaped laser pulses are characterized in the spectral domain by determination of the spectral amplitude and phase as well as in the spatial domain… read more here.
Keywords: laser; laser beams; laguerre gaussian; femtosecond laser ... See more keywords