Tunable Nd, La:SrF ₂ laser and passively Q-switched operation based on gold nanobipyramids saturable absorber

Abstract

A novel Nd, La:SrF2 disordered crystal is prepared, and its continuous-wave wavelength tuning operation is performed for the first time. Employing a surface plasmon resonance (SPR) based gold nanobipyramids (G-NBPs) saturable absorber, we obtain a compact diode-pumped passively Q-switched Nd, La:SrF2 laser. The stable Q-switched pulse operates with the shortest pulse duration of and the maximum repetition rate of 41 kHz. The corresponding single pulse energy is . The results indicate that G-NBPs could be a promising saturable absorber applied to the diode-pumped solid state lasers (DPSSLs).