Generation of 8.5-fs pulses at 1.3 microm for ultrabroadband pump-probe spectroscopy.
We report on a near-infrared non-collinear optical parametric amplifier (NOPA) based on periodically poled stoichiometric lithium tantalate. The NOPA generates muJ-energy pulses with spectrum spanning the 1-1.7 microm wavelength range, which are compressed to nearly transformlimited 8.5 fs duration by a deformable mirror. By synchronizing this source with a sub-10-fs visible NOPA, we demonstrate an unprecedented combination of temporal resolution and spectral coverage in two-colour pump-probe spectroscopy.
Brida
Daniele
D
Dipartimento di Fisica, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy.
Bonora
Stefano
S
Manzoni
Cristian
C
Marangoni
Marco
M
Villoresi
Paolo
P
De Silvestri
Sandro
S
Cerullo
Giulio
G