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Author Basiev, T. T. ♦ Garnov, S. V. ♦ Klimentov, S. M. ♦ Pivovarov, P. A. ♦ Gavrilov, A. V. ♦ Smetanin, S. N. ♦ Solokhin, S. A. ♦ Fedin, A. V.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword MATERIALS SCIENCE ♦ PLASMA PHYSICS AND FUSION TECHNOLOGY ♦ ABLATION ♦ ALUMINIUM ♦ ALUMINIUM NITRIDES ♦ ALUMINIUM OXIDES ♦ CERAMICS ♦ HOLES ♦ INCONEL 718 ♦ KHZ RANGE ♦ LASER CAVITIES ♦ NEODYMIUM LASERS ♦ PLASMA HEATING ♦ PLASMA PRODUCTION ♦ PULSES ♦ Q-SWITCHING ♦ SILICON CARBIDES ♦ STEELS ♦ SURFACES ♦ ALLOY-NI53CR19FE19NB5MO3 ♦ ALLOYS ♦ ALUMINIUM ADDITIONS ♦ ALUMINIUM ALLOYS ♦ ALUMINIUM COMPOUNDS ♦ CARBIDES ♦ CARBON ADDITIONS ♦ CARBON COMPOUNDS ♦ CHALCOGENIDES ♦ CHROMIUM ALLOYS ♦ CORROSION RESISTANT ALLOYS ♦ ELEMENTS ♦ FREQUENCY RANGE ♦ HEAT RESISTANT MATERIALS ♦ HEAT RESISTING ALLOYS ♦ HEATING ♦ INCONEL ALLOYS ♦ IRON ALLOYS ♦ IRON BASE ALLOYS ♦ LASERS ♦ MATERIALS ♦ METALS ♦ MOLYBDENUM ALLOYS ♦ NICKEL ALLOYS ♦ NICKEL BASE ALLOYS ♦ NIOBIUM ALLOYS ♦ NITRIDES ♦ NITROGEN COMPOUNDS ♦ OXIDES ♦ OXYGEN COMPOUNDS ♦ PNICTIDES ♦ SILICON COMPOUNDS ♦ SOLID STATE LASERS ♦ TITANIUM ADDITIONS ♦ TITANIUM ALLOYS ♦ TRANSITION ELEMENT ALLOYS
Abstract Parameters of high-speed ablation of ultradeep channels by controlled pulse trains from a single-mode phase-conjugate dynamic cavity Nd:YAG laser emitting 20-200-ns, 70-250-mJ pulses at a pulse repetition rate in a train of 40-250 kHz are studied. The optimal parameters of ablation are found, for which a long-lived region of a hot rarefied gas was maintained in the ultradeep channel, which suppressed the shielding action of the surface plasma. The control of the lasing process during ablation optimises not only the heating and plasma formation, but also the removal of the processed material in the pause between laser pulses. Adaptive regulation of lasing parameters during ablation made it possible to obtain ultradeep channels of length 8-27 mm and diameters 80-300 {mu}m of the input and output holes in metals (aluminium, steel and Inconel 718 nickel superalloy) and ultrahard ceramics (Al{sub 2}O{sub 3}, AlN, SiC). (special issue devoted to the 25th anniversary of the a.m. prokhorov general physics institute)
ISSN 10637818
Educational Use Research
Learning Resource Type Article
Publisher Date 2007-10-31
Publisher Place United States
Journal Quantum Electronics
Volume Number 37
Issue Number 10


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