Tunable Nd, La:SrF2 laser and passively Q-switched operation based on gold nanobipyramids saturable absorber
Zhang Feng1, 2, Zhang Hua-Nian1, 2, Liu Dan-Hua1, †, Liu Jie1, 2, ‡, Ma Feng-Kai3, Jiang Da-Peng3, Pang Si-Yuan3, Su Liang-Bi3, Xu Jun4
       

(color online) Fluorescence spectrum of Nd,La:SrF2 crystal and wavelength tuning curve of Nd,La:SrF2 crystal laser.