Dynamics of surface processes in a transparent dielectric exposed to laser radiation

Journal Article · Fri Nov 30 00:00:00 EST 2007 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2007V037N11ABEH013521· OSTI ID:21466746

Vasil'ev, S V; Nedolugov, V I ^[1]

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1. Yanka Kupala State University of Grodno, Grodno (Belarus)

High-speed interference filming is used to study the dynamics of development of the change region of a surface vapour-plasma formation under the action of laser radiation with a power density up to 10{sup 7} W cm{sup -2} and a pulse duration of {approx}1 ms on polymethyl methacrylate samples of thickness up to 1 cm. Experiments show that damage region is mainly produced due to a thermal mechanism along with the possible effect of the emerging elastic vibrations. It is also shown that the damage takes place predominantly at the initial stages of the process (up to 100 {mu}s) due to shielding of the sample by a vapour-plasma cloud and scattering of radiation from the liquid-drop phase. (interaction of laser radiation with matter. laser plasma)

• OSTI ID: 21466746
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Vol. 37, Issue 11; Other Information: DOI: 10.1070/QE2007v037n11ABEH013521; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
DIELECTRIC MATERIALS
INTERFERENCE
LASER RADIATION
LIQUIDS
METHACRYLATES
PLASMA PRODUCTION
POWER DENSITY
PULSES
RADIATION EFFECTS
SCATTERING
SURFACES
THICKNESS
VAPORS
CARBOXYLIC ACID SALTS
DIMENSIONS
ELECTROMAGNETIC RADIATION
FLUIDS
GASES
MATERIALS
RADIATIONS