2018
DOI: 10.1088/1555-6611/aabdb4
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Characteristic properties of laser ablation of translucent targets

Abstract: This study reveals the characteristic features of the laser ablation of the solid Nd:Y 2 O 3 targets, such as the dynamics of the laser plume, the crater depth, and the weight and size distribution of liquid melt droplets. The ablation was initiated by the ytterbium fiber laser radiation pulses with constant energy (0.67 J) and with different power densities. The dependence on the power density of such parameters as the injection time of drops, mass distribution of drops, crater depth, and productivity of synt… Show more

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Cited by 6 publications
(3 citation statements)
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“…If such defects are located inside the target in the area of the laser beam incidence, the initial heating also occurs inside the target (in the area of these defects). Then, due to the strong temperature dependence of the absorption coefficient, a heat wave is formed [33], which moves along the laser beam from the defect to the target surface, upon reaching which a laser plume is formed. This process is compounded by the fact that after repeated exposure, the surface of the initial target is covered with a layer of transparent melt 100-400 μm thick, in which the defect concentration is much lower than in the initial target made of sintered micro-powder.…”
Section: Preparing Nanopowdersmentioning
confidence: 99%
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“…If such defects are located inside the target in the area of the laser beam incidence, the initial heating also occurs inside the target (in the area of these defects). Then, due to the strong temperature dependence of the absorption coefficient, a heat wave is formed [33], which moves along the laser beam from the defect to the target surface, upon reaching which a laser plume is formed. This process is compounded by the fact that after repeated exposure, the surface of the initial target is covered with a layer of transparent melt 100-400 μm thick, in which the defect concentration is much lower than in the initial target made of sintered micro-powder.…”
Section: Preparing Nanopowdersmentioning
confidence: 99%
“…When nanopowders are obtained using both lasers, in addition to nanoparticles, spherical particles with sizes from 0.5 to 150 μm are also formed [29,33], as well as shapeless target fragments of the same size. Fragments are formed after the end of radiation exposure to a specific part of the target due to thermal splitting of the cooling fused layer [30].…”
Section: Preparing Nanopowdersmentioning
confidence: 99%
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