Abstract
Guided propagation of ultrashort (100 fs) high intensity (10 16 W cm -2) laser pulses over distances up to 12.6 cm using optimized segmented capillary is reported. A new diagnostic technique is presented in which the transport of a guided laser pulse at different delay times from the initiation of the discharge is sampled on a single discharge shot. The current waveform was optimized to obtain a long lasting, deep radial profile. Radial profiles with the maximal electron density from 4 × 10 17 to 2 × 10 18 cm -3 and up to 25% deep were obtained thereby, whereas longitudinal profiles were found to be remarkably uniform. The potential application of these long channels to the laser wake field accelerator is discussed.
Original language | English |
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Article number | 083108 |
Journal | Physics of Plasmas |
Volume | 13 |
Issue number | 8 |
DOIs | |
State | Published - 2006 |