Abstract

We use semiconductor (Si) and metallic (Al, Zr) transmission filters to shape, in amplitude and phase, high-order harmonics generated from the interaction of an intense titanium sapphire laser field with a pulsed neon gas target. Depending on the properties of the filter, the emitted attosecond pulses can be optimized in bandwidth and/or pulse length. We demonstrate the generation of attosecond pulses centered at energies from $50\text{to}80\mathrm{eV}$, with bandwidths as large as $45\mathrm{eV}$ and with pulse durations compressed to $130\mathrm{as}$.

© 2007 Optical Society of America

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