title: Subnanosecond Tm:KLuW microchip laser Q-switched by a Cr:ZnS saturable absorber.
abstract: Passive Q-switching of a compact Tm:KLu(WO(4))(2) microchip laser diode pumped at 805 nm is demonstrated with a polycrystalline Cr(2+):ZnS saturable absorber. This laser generates subnanosecond (780 ps) pulses with a pulse repetition frequency of 5.6 kHz at 1846.6 nm, the shortest pulse duration ever achieved by Q-switching of ~2 μm lasers. The maximum average output power is 146 mW with a slope efficiency of 21% with respect to the absorbed power. This corresponds to a pulse energy of 25.6 μJ and a peak power of 32.8 kW.
authors.forename: Pavel
authors.initials: P
authors.lastname: Loiko
authors.forename: Josep Maria
authors.initials: JM
authors.lastname: Serres
authors.forename: Xavier
authors.initials: X
authors.lastname: Mateos
authors.forename: Konstantin
authors.initials: K
authors.lastname: Yumashev
authors.forename: Anatoly
authors.initials: A
authors.lastname: Yasukevich
authors.forename: Valentin
authors.initials: V
authors.lastname: Petrov
authors.forename: Uwe
authors.initials: U
authors.lastname: Griebner
authors.forename: Magdalena
authors.initials: M
authors.lastname: Aguiló
authors.forename: Francesc
authors.initials: F
authors.lastname: Díaz