Abstract
Optical guiding of intense laser pulses over a distance in excess of 20 Rayleigh lengths has recently been demonstrated1 using a two pulse technique. The first pulse prepares a shock-driven, axially extended radial electron density profile which guides a second pulse, injected after an optimum delay which increases with mass of the plasma ions. More recent results include even longer guiding distances and spectroscopy of on-axis coherent emission.
© 1993 Optical Society of America
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