Results 21 to 30 of about 129,616 (305)

Preparation and characterization of colloidal CdTe nanoparticles by laser ablation in liquids

open access: yesIraqi Journal of Physics, 2019
Nanoparticles generation by laser ablation of a solid target in a liquid environment is an easy method. Cadmium Telluride (CdTe) colloidal nanoparticles have been synthesized by laser ablation Nd:YAG with wavelengths of 1064nm and double frequency at ...
Amenah Ali Salman
doaj   +1 more source

Environmentally Stable 1.56-μm Femtosecond Laser System With Discontinuous Selectable Repetition Rate

open access: yesIEEE Photonics Journal, 2020
We demonstrate here an environmentally stable and compact Er-doped fiber laser system capable of delivering sub-100-fs pulse duration with discontinuous selectable repetition rate from 10 to 70 MHz.
Hanmei Fu   +4 more
doaj   +1 more source

Nonsequential double ionization with few-cycle laser pulses [PDF]

open access: yes, 2004
We investigate differential electron momentum distributions in nonsequential double ionization with linearly polarized, few-cycle pulses, using a classical model based on a laser-assisted inelastic (e(-),2e(-)) rescattering mechanism.
Faria, CFD, Liu, X
core   +1 more source

SPECTRAL CONTROL OF THE FORMATION PROCESSES OF ALUMINUM NITRIDE CLUSTERS IN THE PLASMA WHEN ALUMINUM IS SUBJECTED TO SERIES OF DOUBLE LASER PULSES [PDF]

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2011
The effect of an additional laser pulse on the formation of the specific component and charge composition of the surface laser plasma was studied by the method of laser spark spectrometry (LSS).
H. N. Trinh, A.R. Fadeian, A.P. Zajogin
doaj  

Power controllable gain switched fiber laser at ~ 3 μm and ~ 2.1 μm

open access: yesScientific Reports, 2021
Based on a hybrid pumping method consisting of a 1150 nm continuous-wave pump source and a 1950 nm pulsed pump source, we demonstrate a power controllable gain-switched fiber laser in dual wavebands at ~ 3 μm and ~ 2.1 μm.
Yiwen Shi   +5 more
doaj   +1 more source

THE FORMATION OF TiO NANOCLUSTERS IN THE SURFACE LASER PLASMA WHEN TITANIUM AND BARIUM TITANATE ARE SUBJECTED TO THE EFFECT OF DOUBLE LASER PULSES [PDF]

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2012
The effect of an additional laser pulse on the formation of the composition and charge state of the surface laser plasma was studied by the laser spark spectrometry (LSS) method.
Fadaeian Ahmad Reza   +2 more
doaj  

SILICON SURFACE MICROSTRUCTURING BY SINGLE-EXPOSURE FEMTOSECOND DOUBLE LASER PULSE [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2019
Subject of Research. The paper evaluates the possibility of periodic microstructures formation on the silicon surface by single-exposure double femtosecond laser pulse. Method.
E. V. Kuzmin   +3 more
doaj   +1 more source

TiOxNy Thin Film Sputtered on a Fiber Ball Lens as Saturable Absorber for Passive Q-Switched Generation of a Single-Tunable/Dual-Wavelength Er-Yb Double Clad Fiber Laser

open access: yesNanomaterials, 2020
The use of titanium oxynitride (TiOxNy) thin films as a saturable absorber (SA) element for generation of passive Q-switched (PQS) laser pulses, from a linear cavity Er-Yb double-clad fiber (EYDCF) laser, is demonstrated.
Ricardo I. Álvarez-Tamayo   +4 more
doaj   +1 more source

Laser annealing of silicon on sapphire [PDF]

open access: yes, 1979
Silicon-implanted silicon-on-sapphire wafers have been annealed by 50-ns pulses from a Q-switched Nd : YAG laser. The samples have been analyzed by channeling and by omega-scan x-ray double diffraction. After irradiation with pulses of a fluence of about
Csepregi   +14 more
core   +2 more sources

Simulation of Laser Ablation in Aluminum: The Effectivity of Double Pulses

open access: yes, 2014
Lasers are becoming a more and more important tool in cutting and shaping materials. Improving precision and effectivity is an ongoing demand in science and industry. One possibility are double pulses.
Krauß, Armin   +3 more
core   +1 more source

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