Two-optical-cycle pulses in the mid-infrared from an optical parametric amplifier.
Ultrabroadband mid IR pulses with energy as high as 2 microJ and tunability from 2 to 5 microm are generated as the idler beam of an 800 nm pumped optical parametric amplifier in periodically poled stoichiometric lithium tantalate. After bulk compression in a Ge plate and frequency-resolved-opticle-gating characterization, a pulse duration as low as 25 fs was measured, corresponding to two optical cycles of the 3.6 microm carrier wavelength.
Brida
D
D
National Laboratory for Ultrafast and Ultraintense Optical Science--INFM-CNR, Dipartimento di Fisica, Politecnico di Milano, Milano, Italy.
Marangoni
M
M
Manzoni
C
C
Silvestri
S De
SD
Cerullo
G
G