Generation of 3.8-fs pulses from adaptive compression of a cascaded hollow fiber supercontinuum.
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.
Schenkel
B
B
Swiss Federal Institute of Technology (ETH Zürich), Physics Department, Institute of Quantum Electronics, ETH Hönggerberg HPT, CH-8093 Zürich, Switzerland. schenkel@phys.ethz.ch
Biegert
J
J
Keller
U
U
Vozzi
C
C
Nisoli
M
M
Sansone
G
G
Stagira
S
S
De Silvestri
S
S
Svelto
O
O