Comparative study of the ablation of materials by femtosecond and pico- or nanosecond laser pulses

Journal Article · Tue Aug 31 04:00:00 EDT 1999 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE1999V029N08ABEH001560· OSTI ID:21454648

Konov, Vitalii I ^[1]; Garnov, Sergei V ^[2]; Danielius, R ^[3]; Piskarskas, A; Tamosauskas, G ^[4]; Dausinger, F ^[5]

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1. Natural Science Center, A.M. Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation)
2. A.M. Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation)
3. Laser Research Center, Vilnius University, Vilnius (Lithuania)
4. Department of Physics, Vilnius University, Vilnius (Lithuania)
5. Institut fur Strahlwerkzeuge (IFSW), Universitat Stuttgart, Stuttgart (Germany)

A series of studies was carried out on the ablation of steel, Si{sub 3}N{sub 4} ceramic, and diamond in air by femtosecond (200 and 900 fs) pulses of different wavelengths (532 and 266 nm) and in a wide energy density range (1 - 10{sup 3} J cm{sup -2}). The ablation rates were measured for different geometries of the irradiation surface [a shallow crater and a channel with a high (up to 10) aspect ratio]. The ablation rates (in a shallow crater) and the morphologies of the irradiated surface were compared for femtosecond and longer (220 ps, 7 ns) pulses. The role of the laser-generated plasma in the ablation of materials by subpicosecond pulses as well as the prospects for the practical application of ultrashort laser pulses in the processing of materials are analysed. (interaction of laser radiation with matter. laser plasma)

• OSTI ID: 21454648
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Journal Name: Quantum Electronics (Woodbury, N.Y.) Journal Issue: 8 Vol. 29; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ABLATION
ALLOYS
ASPECT RATIO
CARBON
CARBON ADDITIONS
CAVITIES
CERAMICS
CRATERS
DIAMONDS
DIMENSIONLESS NUMBERS
ELECTROMAGNETIC RADIATION
ELEMENTS
ENERGY DENSITY
IRON ALLOYS
IRON BASE ALLOYS
LASER BEAM MACHINING
LASER RADIATION
LASER-PRODUCED PLASMA
LASERS
MACHINING
MINERALS
MORPHOLOGY
NITRIDES
NITROGEN COMPOUNDS
NONMETALS
PLASMA
PNICTIDES
PULSES
RADIATION EFFECTS
RADIATIONS
SILICON COMPOUNDS
SILICON NITRIDES
STEELS
SURFACES
TRANSITION ELEMENT ALLOYS
WAVELENGTHS