The role of plasma in ablation of materials by ultrashort laser pulses

Journal Article · Thu May 31 04:00:00 EDT 2001 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2001V031N05ABEH001958· OSTI ID:21442833

Klimentov, Sergei M; Pivovarov, Pavel A; Garnov, Sergei V; Konov, Vitalii I; Prokhorov, A M ^[1]; Breitling, D; Dausinger, F ^[2]

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1. A.M. Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation)
2. Institut fur Strahlwerkzeuge (IFSW), Universitat Stuttgart, Stuttgart (Germany)

The ablative formation of deep channels in steel by femtosecond and picosecond laser pulses is studied. A significant screening of the incident energy inside deep channels is found to occur due to the air breakdown at ablated microparticles. The breakdown thresholds and the microparticle precipitation times are estimated. This kind of plasma screening stabilises the linear ablation rate and causes a significant channel broadening. (femtosecond technologies)

• OSTI ID: 21442833
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Journal Name: Quantum Electronics (Woodbury, N.Y.) Journal Issue: 5 Vol. 31; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ABLATION
ALLOYS
CARBON ADDITIONS
ELECTROMAGNETIC RADIATION
IRON ALLOYS
IRON BASE ALLOYS
LASER RADIATION
MICROSTRUCTURE
PARTICLES
PLASMA
PRECIPITATION
PULSES
RADIATIONS
SCREENING
SEPARATION PROCESSES
STEELS
TRANSITION ELEMENT ALLOYS