Evidence of filamentation (self-focusing) of a laser beam propagating in a laser-produced aluminium plasma
- 14 August 1979
- journal article
- Published by IOP Publishing in Journal of Physics D: Applied Physics
- Vol. 12 (8) , 1261-1273
- https://doi.org/10.1088/0022-3727/12/8/005
Abstract
The thresholds for self-focusing (filamentation) of a laser beam in a laser-produced plasma have been computed for propagation of nanosecond duration pulses in short (cr where Ncr is the critical density) multiply ionised absorbing plasmas. The authors also report results of an experimental study where they have observed filamentary structures in the X-ray emission from aluminium plasmas accompanied by an increase in the divergence of the light transmitted through them. Both observations indicate self-focusing has occurred at an intensity near to that predicted by the computer code, this being approximately=1013-1014 W cm-2 for nanosecond duration pulses in plasmas formed by irradiating light solids (Z<or=13).Keywords
This publication has 19 references indexed in Scilit:
- Self-focussing of a laser beam in a multiply ionized, absorbing plasmaApplied Physics A, 1979
- Interferometric Confirmation of Radiation-Pressure Effects in Laser-Plasma InteractionsPhysical Review Letters, 1978
- On the generation of high flux densities within absorbing plasmas due to self-focussing of a laser beamApplied Physics A, 1977
- Super-high intensities of lasers by short-range relativistic self-focusing of the beams in plasma and dielectric swellingApplied Physics A, 1977
- Evidence of localized heating in CO2-laser-produced plasmasJournal of Applied Physics, 1976
- Theory of relativistic self-focusing of laser radiation in plasmasJournal of the Optical Society of America, 1975
- Beam self-focussing in a laser-produced plasma in a magnetic fieldPhysics Letters A, 1974
- Spectrograph calibration at soft X-ray wavelengths. I. From grating diffraction efficiency and plate response factorsJournal of Physics E: Scientific Instruments, 1973
- Self-focusing of laser beams in a plasma by ponderomotive forcesThe European Physical Journal A, 1969
- PRELIMINARY EVIDENCE FOR SELF-FOCUSING IN GAS BREAKDOWN PRODUCED BY PICOSECOND LASER PULSESApplied Physics Letters, 1969