Loiko Pavel, Serres Josep Maria, Mateos Xavier, Yumashev Konstantin, Yasukevich Anatoly, Petrov Valentin, Griebner Uwe, Aguiló Magdalena, Díaz Francesc
Opt Lett. 2015 Nov 15;40(22):5220-3. doi: 10.1364/OL.40.005220.
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.
