Pump-probe imaging of nanosecond laser-induced bubbles in distilled water solutions: Observations of laser-produced-plasma
- Departamento de Optica, Centro de Investigacion Cientifica y de Educacion Superior de Ensenada, Carratera Ensenada-Tijuana No. 3918, Zona Playitas, C.P. 22860, Ensenada, B. C. Mexico (Mexico)
This article presents the analysis of the laser-produced-plasma (LPP) formed by the focusing of a 9 ns laser pulse, {lambda}=532 nm, with a NA=0.6 aspherical lens using energies between 100-1500 {mu}J, into distilled water with varying solutions of table salt. Observations of the filamentation plasma were made, which are explained by self-focusing of the laser pulse by the LPP through ponderomotive cavitation of the electron plasma in the center of the beam. The filamentation of the beam through a low density plasma wave guide explains why the transmission of the pump laser through the interaction region was notably higher on previous experiments that we performed [R. Evans et al., Opt. Express 16, 7481 (2008)], than a very similar set of experiments performed by Noack and Vogel [IEEE J. Quantum Electron. 35, 1156 (1999)].
- OSTI ID:
- 21537920
- Journal Information:
- Journal of Applied Physics, Vol. 108, Issue 10; Other Information: DOI: 10.1063/1.3506657; (c) 2010 American Institute of Physics; ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
AQUEOUS SOLUTIONS
BEAMS
BUBBLES
CAVITATION
ELECTRONS
INTERACTIONS
LASER-PRODUCED PLASMA
LIGHT TRANSMISSION
NONLINEAR PROBLEMS
PLASMA DENSITY
PLASMA DIAGNOSTICS
PLASMA PRODUCTION
PONDEROMOTIVE FORCE
PULSES
WATER
WAVEGUIDES
DISPERSIONS
ELEMENTARY PARTICLES
FERMIONS
HOMOGENEOUS MIXTURES
HYDROGEN COMPOUNDS
LEPTONS
MIXTURES
OXYGEN COMPOUNDS
PLASMA
SOLUTIONS
TRANSMISSION