Abstract

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‚ÄČfs. Comparisons between the data and radiation models are discussed. This measurement dem onstrates a new method of performing ultrafast laser-plasma diagnostics in solid targets.

© 2008 Optical Society of America

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