Femtosecond Optical Parametric Amplifier for Petawatt Nd:Glass Lasers
ZHANG Xiao-Min1,2, QIAN Lie-Jia1, YUAN Peng1, LUO Hang1, ZHU He-Yuan1, ZHU Qi-Hua2, WEI Xiao-Feng2, FAN Dian-Yuan1
1State Key Laboratory for Advance Photonic Materials and Devices, Department of Optical Science and Engineering, Fudan University, Shanghai 200433
2National Research Center for High Power Solid-State Lasers, Mianyang 621900
Femtosecond Optical Parametric Amplifier for Petawatt Nd:Glass Lasers
1State Key Laboratory for Advance Photonic Materials and Devices, Department of Optical Science and Engineering, Fudan University, Shanghai 200433
2National Research Center for High Power Solid-State Lasers, Mianyang 621900
Abstract： We study a femtosecond Ti:sapphire laser pumped optical parametric amplifier (OPA) at 1053nm. The OPA generates stable signal pulses with duration smaller than 100fs, wavelength drift smaller than 0.5nm, and pulse-to-pulse fluctuation of about ±4%, by employing an external seeder. In a terawatt laser pumped large-aperture LiNbO3 OPA, pulse energy at signal has been scaled up to 4mJ. This mJ-class femtosecond OPA at 1053nm presents a feasible alternative to optical parametric chirped-pulse amplification, and is ready to be applied to petawatt lasers.
2006, Vol. 23 
