Coherent synthesis of ultra-broadband optical parametric amplifiers.
We report on coherent synthesis of two ultra-broadband optical parametric amplifiers, each compressed by chirped mirror pairs, resulting in almost-octave-spanning (520-1000 nm) spectra supporting nearly single-cycle sub-4 fs pulse duration. Synthesized pulse timing is locked to less than 30 as by a balanced optical cross-correlator. The synthesized pulse is characterized by two-dimensional spectral interferometry and has a 3.8 fs duration.
IFN-CNR, Dipartimento di Fisica, Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133 Milan, Italy. cristian.manzoni@polimi.it
C
C
Manzoni
S-W
SW
Huang
G
G
Cirmi
P
P
Farinello
J
J
Moses
F X
FX
Kärtner
G
G
Cerullo