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"Widely tunable sub-30 fs ultraviolet pulses by chirped sum frequency mixing" Ida Z. Kozma, Peter Baum, Stefan Lochbrunner and Eberhard RiedleOpt. Express 11, 3110 - 3115 (2003) Abstract: A novel scheme for the generation of UV pulses in the 295-450 nm range is presented. Sum frequency mixing of the chirped visible pulses from a noncollinear optical parametric amplifier with deliberately chirped pulses from the Ti:sapphire amplifier ensures efficient energy conversion and easy tunability. Pulse energies as high as 5.5 µJ at 295 nm, and >2 µJ in most of the tuning range are obtained with highly symmetric and smooth spectra. They are compressed to sub-30 fs throughout the entire tuning range (20 fs at 348 nm) with a newly designed prism compressor. BMO authors (in alphabetic order): Peter Baum Ida Zsuzsanna Kozma Stefan Lochbrunner Eberhard Riedle  WWW-Version |