Half-cycle-pulse terahertz emission from an ultrafast laser plasma in a solid target.
Coherent far-IR radiation is observed upon the generation of dense laser-driven plasma in a solid copper target. The coherent radiation demonstrates a strong half-cycle-pulse nature with temporal dynamics as fast as 150 fs. Comparisons between the data and radiation models are discussed. This measurement demonstrates a new method of performing ultrafast laser-plasma diagnostics in solid targets.
Gao
Yuan
Y
Department of Physics and Astronomy, University of Delaware, 217 Sharp Laboratory, Newark, Delaware 19716, USA.
Drake
Tara
T
Chen
Zhiyuan
Z
Decamp
Matthew F
MF