Intense local plasma heating by stopping of ultrashort ultraintense laser pulse in dense plasma

Electron Acceleration Using an Ultrashort Ultraintense Laser Pulse

Producing ultrashort, ultraintense plasma-based soft-x-ray laser pulses by high-harmonic seeding

Simulations show that intense plasma-amplified pulses of 100 fs duration and below are feasible by seeding specifically tailored plasma with an ultrashort pulse of high harmonic radiation. Seeding overcomes gain narrowing by driving amplifying media into saturation earlier, and compensates for reduced gain resulting from boosting the lasing transition linewidth. We conclude that ultrahigh inten...

Plasma modeling for ultrashort pulse laser ablation of dielectrics

In ultrashort pulse ͑Ͻ10 ps͒ laser ablation of dielectrics, affected materials are first transformed into absorbing plasma with metallic properties and, then, the subsequent laser-plasma interaction causes material removals. For ultrashort-pulse laser ablation of dielectrics, this study proposes a model using the Fokker-Planck equation for electron density distribution, a plasma model for the opt...

Studies of Spectral Modification in Intense Laser Pulse-plasma Interactions

Title of Document: STUDIES OF SPECTRAL MODIFICATION IN INTENSE LASER PULSE-PLASMA INTERACTIONS Wenxi Zhu, Doctor of Philosophy, 2013 Directed By: Professor Thomas M. Antonsen Jr., Physics Laser pulses propagating through plasma undergo spectral broadening through local energy exchange with driven plasma waves. During propagation, a high power laser pulse drives large amplitude plasma waves, dep...

Intense laser pulse amplification using Raman backscatter in plasma channels

It has been proposed that the Raman backscatter interaction in a plasma can be used to amplify ultra-intense laser pulses. To accomplish this, energy is transferred from a long drive pulse at frequency ωpump to an intense seed pulse at frequency ωseed, with a Langmuir plasma wave at frequency wp mediating the transfer; the frequencies are chosen to satisfy the resonant condition ωp = ωpump −ωse...