Tunable Nd, La:SrF2 laser and passively Q-switched operation based on gold nanobipyramids saturable absorber |
(color online) (a) Output spectra of the Nd,La:SrF2 disordered crystal under continuous wave and Q-switched operation. (b) Repetition rate and pulse width versus absorbed pump power. (c) Pulse trains versus the absorbed pump power on a time scale of 20 |