In this paper, the prepulses or the pedestal is intense enough to generate preplasma, which prevents the main pulse from interacting with a steep plasma. The plasma mirror is a promising technique for improving the pulse contrast. We used a Ti:Sa laser system providing 7 fs pulses with an energy of 400/spl mu/J on the target to generate and characterize the plasma mirror. The pulses are focused inside a vacuum chamber onto a glass target, which was rotated during the experiment and was replaced every two million shots. In conclusion we present an application-ready plasma mirror technique for few-cycle pulses, which improves the pulse contrast by two orders of magnitude and provides stable and well focusable pulses over an extended period of time (approx. one hour at 1 kHz pulse repetition rate).
Plasma mirror with few-cycle laser pulses
2005-01-01
239399 byte
Conference paper
Electronic Resource
English
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