We experimentally realized and demonstrated a solid-state, passively Q-switched Nd:YVO4/PPLN green laser with a saturable absorber (SA) based on few-layered MoS2. The MoS2 SA was fabricated by transferring MoS2 nanosheets onto a quartz substrate, and the obtained SA exhibited good transparency from the ultraviolet to near-infrared spectral regions. The modulation depth and the damage threshold of the MoS2 SA were measured to be 4.3% and 33.6 J/cm2, respectively. By inserting the MoS2 SA into a V-shaped laser resonant cavity, we achieved a stable Q-switched laser operation at 532.7 nm with a maximum average output power of 323 mW at the maximum absorbed pump power of 6.21 W that corresponded to a pulse duration of 320 ns, a repetition rate of 66.7 kHz, and a pulse energy of approximately 4.84 μJ. The experimental results validated the feasibility of MoS2 as a SA material and its promising applications in ultrafast lasers.
Optical Review – Springer Journals
Published: Oct 7, 2017
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