title: Rise in power of Yb:YCOB for green light generation by self-frequency doubling.
abstract: Spectroscopic properties and self-frequency-doubling laser performance are presented for Yb:YCa4O(BO3)3(Yb:YCOB) crystals oriented for type I second-harmonic generation in the ZX plane. In a plane-concave cavity 10 cm long, up to 330 mW of green light (544.5 nm) is obtained for 14.7 W of laser diode incident pump power. Broad emission bands and weak anisotropy in the 1060-1100 nm range between the two eigenstates of polarization may explain the instability of the self-frequency-doubled output power.
authors.forename: Federico
authors.initials: F
authors.lastname: Khaled
authors.forename: Pascal
authors.initials: P
authors.lastname: Loiseau
authors.forename: Gérard
authors.initials: G
authors.lastname: Aka
authors.forename: Lucian
authors.initials: L
authors.lastname: Gheorghe