Femtosecond pulse parametric amplification at narrowband high power gas laser pumping.
In ultrashort pulse amplification a narrowband gas pump pulse laser has been used for the first time. An all-stage optical parametric chirped pulse amplifier (OPCPA) was driven by a single-shot iodine photodissociation laser. For the first time a broadband amplification was achieved in potassium dihydrogen phosphate crystal at 800 nm seeding. Ti:sapphire laser pulses stretched from 12.5 fs to 250 ps were amplified and compressed to 27 fs at a 0.5 TW output power. The results suggest using narrowband high power gas lasers as OPCPA drivers to generate petawatt beams.
Institute of Physics, AS CR, v.v.i., 182 21 Prague 8, Czech Republic. novakon@fzu.cz
Ondřej
O
Novák
Hana
H
Turčičová
Martin
M
Divoký
Martin
M
Smrž
Jaroslav
J
Huynh
Petr
P
Straka