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Opt Lett. 2003 Oct 15;28(20):1987-9.

Generation of 3.8-fs pulses from adaptive compression of a cascaded hollow fiber supercontinuum.

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  • 1Swiss Federal Institute of Technology (ETH Zürich), Physics Department, Institute of Quantum Electronics, ETH Hönggerberg HPT, CH-8093 Zürich, Switzerland.


We demonstrate generation of 3.8-fs pulses with energies of up to 15 microJ from a supercontinuum produced in two cascaded hollow fibers. Ultrabroadband dispersion compensation was achieved through a closed-loop combination of a spatial light modulator for adaptive pulse compression and spectral-phase interferometry for direct electric-field reconstruction (SPIDER) measurements as feedback signal.

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