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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 29, Iss. 14 — Jul. 15, 2004
  • pp: 1686–1688

Tunable sub-10-fs ultraviolet pulses generated by achromatic frequency doubling

Peter Baum, Stefan Lochbrunner, and Eberhard Riedle  »View Author Affiliations


Optics Letters, Vol. 29, Issue 14, pp. 1686-1688 (2004)
http://dx.doi.org/10.1364/OL.29.001686


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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-μm-thick β-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.

© 2004 Optical Society of America

OCIS Codes
(190.2620) Nonlinear optics : Harmonic generation and mixing
(320.5520) Ultrafast optics : Pulse compression
(320.7110) Ultrafast optics : Ultrafast nonlinear optics

Citation
Peter Baum, Stefan Lochbrunner, and Eberhard Riedle, "Tunable sub-10-fs ultraviolet pulses generated by achromatic frequency doubling," Opt. Lett. 29, 1686-1688 (2004)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-29-14-1686

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