title: 0.3% energy stability, 100-millijoule-class, Ti:sapphire chirped-pulse eight-pass amplification system.
abstract: Highly stable operation of a two-stage multipass Ti:sapphire amplifier (a four-pass pre-amplifier and a four-pass power amplifier) for a 100-mJ-class chirped-pulse amplification system has been demonstrated by passive stabilization. By optimizing the ratio of pump energies to the two amplifiers and the optical losses artificially inserted into the second power amplifier, a root-mean-square fluctuation in pulse energy of 0.3% was achieved, which was 5 times lower than that of the pump laser. This is the lowest pulse-to-pulse fluctuation, to the best of our knowledge, obtained by the 100-mJ-class Ti:sapphire amplifiers.
authors.affiliation: Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan. tokita@laser.kuicr.kyoto-u.ac.jp
authors.forename: Shigeki
authors.initials: S
authors.lastname: Tokita
authors.forename: Masaki
authors.initials: M
authors.lastname: Hashida
authors.forename: Shinichiro
authors.initials: S
authors.lastname: Masuno
authors.forename: Shin
authors.initials: S
authors.lastname: Namba
authors.forename: Shuji
authors.initials: S
authors.lastname: Sakabe
mesh_terms: D000537:Aluminum Oxide / Q000737:chemistry*; D000669:Amplifiers, Electronic; D003198:Computer Simulation; D017076:Computer-Aided Design; D004735:Energy Transfer; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007834:Lasers; D008962:Models, Theoretical; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*
chemical_list: D000537:Aluminum Oxide