Title :
Generation of high-contrast, 30 fs, 1.5 PW laser pulses
Author :
Jeong, T.M. ; Yu, T.J. ; Lee, Sol Kyu ; Sung, Jin Ho ; Nam, C.H. ; Lee, Jeyull
Author_Institution :
Center for Relativistic Laser Sci., Inst. for Basic Sci., Gwangju, South Korea
fDate :
June 30 2013-July 4 2013
Abstract :
A high-contrast, 30 fs, 1.5 PW Ti:sapphire laser has been developed for research on high field physics. The maximum output energy of 60.2 J was obtained from a booster amplifier pumped by four frenquency-doubled Nd:glass laser systems. Parasitic lasing was suppressed by index matching fluid with absorption dye and the careful manipulation of the time delay between the seed and pump pulses. After compression, the measured pulse duration was 30.2 ± 1.8 fs, and the output energy was 44.5 J, yielding a peak power of about 1.5 PW. A saturable absorber and two ultrafast Pockels cells were installed in the front-end system for the minimization of the amplified spontaneous emission (ASE) and pre-pulse intensity. An adaptive optics system was implemented for obtaining the near diffraction-limited focal spot.
Keywords :
Pockels effect; adaptive optics; optical pulse compression; optical pulse generation; optical pumping; optical saturable absorption; sapphire; solid lasers; superradiance; titanium; Al2O3:Ti; absorption dye; adaptive optics system; amplified spontaneous emission; booster amplifier; diffraction-limited focal spot; energy 44.5 J; energy 60.2 J; frequency-doubled neodymium-glass laser systems; high-contrast titanium-sapphire laser pulse generation; index matching fluid; optical pulse compression; optical pumping; parasitic lasing; power 1.5 PW; saturable absorber; time 30 fs; time delay method; ultrafast Pockels cells; Laser excitation; Laser theory; Pump lasers; Pumps; Ultrafast optics;
Conference_Titel :
Lasers and Electro-Optics Pacific Rim (CLEO-PR), 2013 Conference on
Conference_Location :
Kyoto
DOI :
10.1109/CLEOPR.2013.6600066
