Abstract

We have recently demonstrated a high repetition rate gas jet, designed to eliminate the problem of refraction in the injection of high intensity laser pulses into plasma waveguides.¹ A sequence of measured electron density from a 1.5 cm long argon jet waveguide is shown in Fig. 1. Figure 2 shows electron density profiles as a function of axial distance at the end of the waveguide. Guiding experiments were performed with a high power femtosecond Ti: Sapphire laser system (10 Hz, 50 mJ, 100 fs) synchronized to the Nd:YAG waveguide generating laser as described in Ref. 2.

© 1999 Optical Society of America