title: Directly diode-pumped Yb:KY(WO(4))(2) regenerative amplifiers.
abstract: Two Yb(3+) -doped KY(WO(4))(2) regenerative amplifiers, one end pumped by two 1.6-W single-stripe diodes at 940 nm and the other side pumped by one 20-W diode bar at 980 nm, are demonstrated. When the regenerative amplifiers are injected, 40-muJ , 400-fs and 65-muJ , 460-fs pulses at a 1-kHz repetition rate are obtained following compression from the end- and side-pumped amplifiers, respectively.
authors.forename: Hsiao-Hua
authors.initials: HH
authors.lastname: Liu
authors.forename: John
authors.initials: J
authors.lastname: Nees
authors.forename: Gérard
authors.initials: G
authors.lastname: Mourou