title: 7.6  W 1342  nm passively mode-locked picosecond composite Nd:YVO4/YVO4 laser with a semiconductor saturable absorber mirror.
abstract: A high average power 1342 nm passively CW mode-locked picoseconds (ps) composite Nd:YVO4 laser was demonstrated with a semiconductor saturable absorber mirror (SESAM). The oscillator cavity was carefully designed to optimize the laser beam radii in the crystal and on the SESAM. The combination of composite bonded laser crystal, direct pumping, and dual end-pumped configuration was adopted to reduce the thermal effect and produce high output power with high beam quality. A maximum average output power of 7.63 W was obtained with a repetition rate of 77 MHz and a pulse duration of 24.2 ps under an absorbed pump power of 38.6 W, corresponding to an optical-optical efficiency of 19.7% and a slope efficiency of 25.9%, respectively. The beam quality factor M(2) was measured to be 1.49.
authors.forename: Wei
authors.initials: W
authors.lastname: Tu
authors.forename: Ying
authors.initials: Y
authors.lastname: Chen
authors.forename: Nan
authors.initials: N
authors.lastname: Zong
authors.forename: Ke
authors.initials: K
authors.lastname: Liu
authors.forename: Zhi-Min
authors.initials: ZM
authors.lastname: Wang
authors.forename: Feng-Feng
authors.initials: FF
authors.lastname: Zhang
authors.forename: Shen-Jin
authors.initials: SJ
authors.lastname: Zhang
authors.forename: Feng
authors.initials: F
authors.lastname: Yang
authors.forename: Lei
authors.initials: L
authors.lastname: Yuan
authors.forename: Yong
authors.initials: Y
authors.lastname: Bo
authors.forename: Qin-Jun
authors.initials: QJ
authors.lastname: Peng
authors.forename: Da-Fu
authors.initials: DF
authors.lastname: Cui
authors.forename: Zu-Yan
authors.initials: ZY
authors.lastname: Xu