Status and future developments of ultrahigh intensity lasers at JAERI

摘要

We review progress in the generation of multiterawatt optical pulses in the 10-fs range. As an example, the design, performance and characterization of a Ti:sapphire laser system based on chirped-pulse amplification at the Advanced Photon Research Center, Japan Atomic Energy Research Institute is described. This system produces 20-fs pulses with peak and average powers of 100-TW and 20-W, respectively at a 10-Hz repetition rate and is currently being applied to perform high-field atomic ionization experiments at a relativistic intensity regime. We also discuss extension of the system that is presently upgrading to the petawatt power level.