Realizing a Passively Q-switched 946 nm Nd:YAG Laser with a Graphene Oxide Saturable Absorber
H-Y. Lin, X. Liu, X-H. Huang, W-Z. Zhu, D. Sun and Y-C. Xu
We demonstrated a passively Q-switched 946 nm Nd:YAG laser using graphene oxide (GO) as a saturable absorber (SA). The GO was directly deposited in a long-wave-pass filter by a vertical evaporation method, and the initial transmission was about 89.00% at 946 nm. The pulsed laser was realized at the pump threshold of 4.74 W. The repetition rate was tunable from 114 to 355 kHz. The maximum output power and the minimum pulse width were 452 mW and 152 ns, respectively.
Keywords: Nd:YAG laser, graphene oxide (GO), saturable absorber (SA), passively Q-switched, 946 nm