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Temporal contrast in Ti:sapphire lasers, characterization and control

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12 Author(s)
Nantel, M. ; Center for Ultrafast Opt. Sci., Michigan Univ., Ann Arbor, MI, USA ; Itatani, J. ; An-Chun Tien ; Faure, J.
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As ultrafast lasers achieve ever higher focused intensities on target, the problem of ensuring a clean laser-solid interaction becomes more pressing. In this paper, we give concrete examples of the deleterious effects of low-contrast interactions, and address the problem of subpicosecond laser intensity contrast ratio on both characterization and control fronts. We present the new technique of high-dynamic-range plasma-shuttered streak camera contrast measurement, as well as two efficient and relatively inexpensive ways of improving the contrast of short pulse lasers without sacrificing on the output energy: a double-pass Pockels cell (PC), and clean high-energy-pulse seeding of the regenerative amplifier

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Selected Topics in Quantum Electronics, IEEE Journal of  (Volume:4 ,  Issue: 2 )