Abstract
Over the past 15 years, there has been rapid progress in producing high peak power, ultrashort laser pulses by incorporating the technique of chirped pulse amplification (CPA). A few years ago, laser pulses as short as 450-fs with 1.5 petawatt (PW) peak power have been generated by using a large scale, inertial-confinement-fusion, Nd:glass laser [1]. Although the system has opened up for the studies of high -field laser-matter interactions at the laser intensity on the order of 1020 W/cm2, it was not suitable as a realistic laboratory tool for investigations requiring ultrahigh or relativistic intensities. Through different approaches of reductions in the pulse duration down to tens of femtoseconds us ing Ti:sapphire gain media and consummated extraction efficiency in an amplifier, we are currently developing a laboratory -scaled PW Ti:sapphire laser system which is currently being produced 32.9-fs pulses with a peak power of 0.85-PW.
© 2003 Optical Society of America
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