The stability of WSe2 Q-switched fiber laser

In this paper, we present an environmentally stable all-polarization-maintaining Erbium-doped Q-switched fiber laser based on WSe
2
-PVA as a saturable absorber. WSe
2
-PVA film is synthesized by liquid phase exfoliation. We let the fiber laser continue to work twelve hours, and we keep a record of the output power, optical spectrum, and frequency spectrum every thirty minutes. The results shows the stability of the WSe
2
in a stable ring cavity. Our work demonstrates the feasibility for this 2D material to be applied in the field of fiber laser.