Tunable Nd, La:SrF
2
laser and passively Q-switched operation based on gold nanobipyramids saturable absorber
Zhang Feng
1, 2
, Zhang Hua-Nian
1, 2
, Liu Dan-Hua
1, †
, Liu Jie
1, 2, ‡
, Ma Feng-Kai
3
, Jiang Da-Peng
3
, Pang Si-Yuan
3
, Su Liang-Bi
3
, Xu Jun
4
(color online) Schematic diagram of the Nd,La:SrF
2
wavelength tuning laser.