title: Low-threshold diode-pumped Yb3+,Na+:CaF2 self-Q-switched laser.
abstract: For the first time to our knowledge, the laser performance of Yb3+, Na+-codoped CaF2 single crystals was demonstrated. Self-Q-switched laser operation at 1050nm was observed for 976 nm diode pumping at room temperature. On 5 W of incident power, the repetition rate and width of the self-Q-switched pulses reached 28 kHz and 1.5 micros, respectively. A maximal slope efficiency of 20.3% and minimal threshold absorbed pump power of 30 mW were respectively achieved with different output couplers, showing the promising application of Yb3+, Na+-codoped CaF2 crystals as compact and efficient solid-state lasers.
authors.forename: Liangbi
authors.initials: L
authors.lastname: Su
authors.forename: Jun
authors.initials: J
authors.lastname: Xu
authors.forename: Yinghong
authors.initials: Y
authors.lastname: Xue
authors.forename: Chingyue
authors.initials: C
authors.lastname: Wang
authors.forename: Lu
authors.initials: L
authors.lastname: Chai
authors.forename: Xiaodong
authors.initials: X
authors.lastname: Xu
authors.forename: Guangjun
authors.initials: G
authors.lastname: Zhao