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Opt Lett. 2008 Dec 15;33(24):2970-2.

Dispersion-compensating beam shaper for femtosecond optical vortex beams.

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  • 1Department of Physics and Astronomy, University of New Mexico, Albuquerque, NM 87131, USA.


A beam shaper suitable for sub-20 fs pulses based on a prism pair and a computer-generated hologram was developed to produce vortex beams. Comparatively high throughput and the ability to tune the group-velocity dispersion make this shaper suitable for pulses from femtosecond oscillators and amplifiers and where there is a need for additional postchirp or prechirp compensation.

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