Pb(Zrx,Ti1-x)O3 perovskite material for passively ultrafast pulse generation in a Tm:YAP laser

Ultrafast pulsed lasers (UPL) have critical applications in many fields, where a saturable absorber (SA) is an essential part. Perovskites have attracted much attention in SAs due to their unique structural features, which have not been mentioned in ultrafast pulsed lasers yet. In this paper, Pb(Zrx,Ti1-x)O3 (PZT) perovskite material is used as the SA equipment in an M-type passively mode-locked solid Tm:YAP UPL. Benefiting from the unique structure, the UPL possesses a ∼ 2 μm laser output and a repetition frequency of 102.04 MHz, as equipped in a 1466 mm length cavity. In addition, the output power of the laser is 0.721 and 0.297 W in continuous wave and passive mode-locked operation, respectively. Meanwhile, the laser gets the narrowest pulse width of 820.73 ps along with a peak power of 3.55 W, and it expresses quality factors of Mx2 = 1.09 and My2 = 1.12. at the highest average output power. These advantages indicating that the PZT can be an ideal SA material in a solid UPL.