Title :
Dual-channel multiterawatt laser system with coherent beam combining
Author :
Bagayev, S.N. ; Trunov, V.I. ; Pestryakov, E.V. ; Frolov, S.A. ; Leshchenko, V.E. ; Vasiliev, V.A.
Author_Institution :
Inst. of Laser Phys., Novosibirsk, Russia
fDate :
June 30 2014-July 4 2014
Abstract :
The dual-channel femtosecond laser system with each channel consisting of three BBO and LBO crystals based broadband parametric amplification stages of Ti:Sa laser radiation and relative jitter stabilization system to 110 as level is presented. For the first time coherent combining of two sequences of parametrically amplified femtosecond pulses with energy of ~ 150 mJ, 10 Hz repetition rate is experimentally realized. Coherent combining efficiency of over 90% is reached. Experimental results of parametrically amplified contrast measurement are presented with further comparison with simulation results based on the model of parametric luminescence evolution developed by us. In order to achieve petawatt power level schemes of multibeam pumping of the booster cascade of developed laser system are considered.
Keywords :
barium compounds; boron compounds; high-speed optical techniques; laser beams; laser stability; laser variables measurement; light coherence; lithium compounds; optical parametric amplifiers; optical pumping; photoluminescence; solid lasers; BBO; BBO crystal based broadband parametric amplification stages; LBO crystal based broadband parametric amplification stages; LiB3O5; coherent beam combining; dual-channel femtosecond laser system; dual-channel multiterawatt laser system; multibeam pumping; parametric luminescence evolution model; petawatt power level schemes; relative jitter stabilization system; Analytical models; Chirp; Energy measurement; Gratings; coherent beam combining; contrast; femtosecond pulses; multibeam pump; parametric amplification; petawatt;
Conference_Titel :
Laser Optics, 2014 International Conference
Conference_Location :
Saint Petersburg
Print_ISBN :
978-1-4799-3884-1
DOI :
10.1109/LO.2014.6886342
