title: Efficient visible femtosecond optical parametric generator and amplifier using tilted pulse-front pumping.
abstract: Using pulses with tilted pulse fronts to compensate for the group-velocity mismatch in three-wave interactions, we constructed an efficient 400-nm pumped femtosecond collinear typeI phase-matched beta -barium borate optical parametric generator and amplifier. The signal and idler outputs are tunable from 470nm to 2.7 microm and have pulse widths in the range of 100170fs at a 1-kHz repetition rate. A maximum output energy of 6.5 microJ and a total conversion efficiency of more than 15% were achieved.
authors.forename: K S
authors.initials: KS
authors.lastname: Wong
authors.forename: Z R
authors.initials: ZR
authors.lastname: Qui
authors.forename: H
authors.initials: H
authors.lastname: Wang
authors.forename: G K
authors.initials: GK
authors.lastname: Wong