Title :
Relativistic accelerations in femtosecond laser-produced plasmas
Author :
Theobald, W. ; Hassner, R. ; Niedermeier, S. ; Michelmann, K. ; Feurer, T. ; Schillinger, H. ; Sauerbrey, R. ; Schafer, G.
Author_Institution :
Inst. fur Opt. und Quantenelektron., Friedrich-Schiller-Univ., Jena, Germany
Abstract :
Summary form only given. The interaction of femtosecond laser pulses with solids at intensities up to 10/sup 18/ W/cm/sup 2/ leads to the formation of high-density plasmas with electron densities exceeding 10/sup 23/ cm/sup -3/. It is well known that frequency-resolved measurements of reflected laser light from a plasma surface reveal the mass motion driven by the heating laser pulse. A more complete picture of the plasma motion can be obtained by measuring the phase and amplitude of the reflected pulse. Frequency-resolved optical gating (FROG) detection is a method that provides a 2D temporally resolved spectrum from which phase and amplitude information can be retrieved. We have used this technique to measure the reflected waveform in a high-intensity laser-solid interaction experiment.
Keywords :
high-speed optical techniques; plasma production by laser; relativistic plasmas; time resolved spectra; wakefield accelerators; 2D temporally resolved spectrum; femtosecond laser-produced plasmas; frequency-resolved optical gating; high-density plasmas; high-intensity laser-solid interaction; plasma motion; reflected waveform; relativistic accelerations; Acceleration; Frequency; Motion measurement; Optical pulses; Plasma accelerators; Plasma density; Plasma measurements; Pulse measurements; Solid lasers; Ultrafast optics;
Conference_Titel :
Lasers and Electro-Optics, 1998. CLEO 98. Technical Digest. Summaries of papers presented at the Conference on
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
1-55752-339-0
DOI :
10.1109/CLEO.1998.676048
