title: Compact cryogenically cooled Ti:Sapphire dual multi-kilohertz amplifiers for synchrotron radiation ultra-fast x-ray applications.
abstract: A titanium-doped sapphire regenerative dual-amplifier array operating at multi-kHz repetition rates has been developed for synchrotron radiation ultra-fast x-ray applications. The thermal lensing of the crystal in the amplifiers is virtually eliminated by cryogenic cooling of the laser crystal. The output energy of the amplifiers is measured to be greater than 2.6 mJ and the pulse length was compressed to less than 70 fs. The output laser mode is a near perfect Gaussian TEM00 with an M(2) factor of 1.02. The performance of the amplifier system is in excellent agreement with theoretical calculation.
authors.affiliation: Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA. fjun@lbl.gov
authors.forename: J
authors.initials: J
authors.lastname: Feng
authors.forename: J
authors.initials: J
authors.lastname: Nasiatka
authors.forename: M
authors.initials: M
authors.lastname: Hertlein
authors.forename: B
authors.initials: B
authors.lastname: Rude
authors.forename: H
authors.initials: H
authors.lastname: Padmore