title: Pulse energy of 151 nJ from ultrafast thulium-doped chirped-pulse fiber amplifier.
abstract: We report on chirped-pulse amplification of an ultrafast thulium-doped fiber laser. Pulses with an energy of 3.3 nJ and a bandwidth-limited pulse duration of 195 fs could be amplified to 151 nJ, which corresponds to an average power of 5.7 W at 37.6 MHz pulse repetition rate. The maximum output power was limited by the available pump power. The pulses could be dechirped to a duration of 258 fs.
authors.affiliation: Laser Zentrum Hannover e.V., Hollerithallee 8, D-30419 Hannover, Germany. f.haxsen@lzh.de
authors.forename: Frithjof
authors.initials: F
authors.lastname: Haxsen
authors.forename: Dieter
authors.initials: D
authors.lastname: Wandt
authors.forename: Uwe
authors.initials: U
authors.lastname: Morgner
authors.forename: Joerg
authors.initials: J
authors.lastname: Neumann
authors.forename: Dietmar
authors.initials: D
authors.lastname: Kracht