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Impressum
(c) 2002 BMO

"Tunable sub-10-fs ultraviolet pulses generated by achromatic frequency doubling"
Peter Baum, Stefan Lochbrunner, and Eberhard Riedle
Opt. Lett. 29, 1686 - 1688 (2004)


Abstract:
Tunable UV pulses shorter than 10 fs are generated by achromatic frequency doubling of a noncollinear optical parametric amplifier. With a suitable two-prism sequence we achieve first- and second-order achromatic phase matching and increase the natural bandwidth of the nonlinear crystal by a factor of 80. Extremely broad UV spectra with a Fourier limit of 2.9 fs are generated in a 360-mm-thick beta-barium borate crystal at a conversion efficiency of 20%. We compensate for the angular dispersion and the first-order chirp of the highly stable UV pulses with a second prism sequence and fully characterize the temporal pulse shape with zero-additional-phase spectral phase interferometry for direct electric-field reconstruction (ZAP-SPIDER). Pulses as short as 7 fs are generated by controlling the higher-order chirp with a deformable mirror.

BMO authors (in alphabetic order):
Peter Baum
Stefan Lochbrunner
Eberhard Riedle

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Letzte Änderung: 2016-09-14 13:34