Parts | Days | Selection | Search | Downloads | Help

Q: Quantenoptik

Q 46: Erzeugung ultrakurzer Pulse II

Q 46.7: Talk

Friday, April 7, 2000, 13:30–13:45, HS XVI

Relativistic plasma-wave pulse-compression — •Michael Geissler and Thomas Brabec — Vienna University of Technology, Gusshausstrasse 27-29, A-1040 Vienna, Austria

We present a numerical (1D-PIC) analysis which indicates that, similar to the Kerr nonlinearity in optical fibers, the nonlinearity in a plasma-channel can be utilized for pulse compression. Our calculations show that the spectrum of a relativistic laser pulses with an initial duration < 100 fs is broadened by the plasma nonlinearity and exhibits a nearly quadratic phase dependence. Compensation of the quadratic phase compresses the pulse by a factor of approx. 10 promising the possibility of extending the feasibility of few-cycle laser pulses into the relativistic intensity regime.