MXene Ti 3 C 2 T x saturable absorber for pulsed laser at 1.3 μm

The excellent optical properties of MXene provide new opportunities for short-pulse lasers. A diode-pumped passively Q -switched laser at 1.3 μm wavelength with MXene Ti 3 C 2 T x as saturable absorber was achieved for the first time. The stable passively Q -switched laser has 454 ns pulse width and 162 kHz repetition rate at 4.5 W incident pumped power. The experimental results show that the MXene Ti 3 C 2 T x saturable absorber can be used as an optical modulator to generate short pulse lasers in a solid-state laser field.