Abstract
A scheme for stable shot-to-shot few-cycle pulse production has been realized by launching an initially collimated laser beam into a gas tube. We found that the optimum parameters for the sevenfold compression of , , Ti:Sapphire laser pulses are the following: argon gas pressure and the registration aperture with a diameter of . A technique for the efficient extraction of the self-compressed pulse from the desired position along the filament has been provided by moving the registration aperture along the tube. With this technique, pulses as short as were detected at a distance of from the filament starting position, in agreement with numerical simulations performed using a axially symmetric code.
© 2010 Optical Society of America
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