MXene V_(2)CT_(x) has great practicability because it is not easy to degrade under ambient conditions.In this paper,a V_(2)CT_(x) saturable absorber(SA)was firstly applied to a passively Q-switched(PQS)laser,to the be...MXene V_(2)CT_(x) has great practicability because it is not easy to degrade under ambient conditions.In this paper,a V_(2)CT_(x) saturable absorber(SA)was firstly applied to a passively Q-switched(PQS)laser,to the best of our knowledge.The V_(2)CT_(x)-SA was prepared by the spin-coating method.The linear absorption of the V_(2)CT_(x)-SA in the 1000-2200 nm region and the nonlinear absorption near 2μm were studied.With the V_(2)CT_(x)-SA,a typical PQS operation at 1.94μm was realized in a Tm:YAlO3laser.The minimum pulse width produced by the PQS laser was 528 ns,and the peak power,repetition rate,and average output power were 10.06 W,65.9 kHz,and 350 mW,respectively.Meanwhile,the maximum pulse energy was 6.33μJ.This work demonstrates that the V_(2)CT_(x) can be used as an effective SA to obtain nanosecond pulses with high peak power and high repetition rate simultaneously.展开更多
基金supported by the China Postdoctoral Science Foundation(No.2020M670937)the Basic Scientific Research Business Expenses of Colleges and Universities in Heilongjiang Province(No.2021-KYYWF-0020)。
文摘MXene V_(2)CT_(x) has great practicability because it is not easy to degrade under ambient conditions.In this paper,a V_(2)CT_(x) saturable absorber(SA)was firstly applied to a passively Q-switched(PQS)laser,to the best of our knowledge.The V_(2)CT_(x)-SA was prepared by the spin-coating method.The linear absorption of the V_(2)CT_(x)-SA in the 1000-2200 nm region and the nonlinear absorption near 2μm were studied.With the V_(2)CT_(x)-SA,a typical PQS operation at 1.94μm was realized in a Tm:YAlO3laser.The minimum pulse width produced by the PQS laser was 528 ns,and the peak power,repetition rate,and average output power were 10.06 W,65.9 kHz,and 350 mW,respectively.Meanwhile,the maximum pulse energy was 6.33μJ.This work demonstrates that the V_(2)CT_(x) can be used as an effective SA to obtain nanosecond pulses with high peak power and high repetition rate simultaneously.
