Cao Lihua, Chu Hongwei, Pan Han, Wang Rui, Li Ying, Zhao Shengzhi, Li Daozhi, Zhang Han, Li Dechun
Opt Express. 2020 Oct 12;28(21):31499-31509. doi: 10.1364/OE.406035.
In the present work, we report the structural properties of the two dimensional (2D) few-layered TiC(OH)/TiCF hybrid MXene synthesized via the HF acid etching method. Various characterizations were exploited to demonstrate the 2D layered structural properties of the hybrid MXene membranes. The density functional theory (DFT) simulation indicated the hybrid MXene possessed the small enough band gap, which could benefit the nonlinear optical applications in the infrared region. By the conventional open-aperture Z-scan technique, typical nonlinear saturable features were measured. Consequently, the hybrid MXene membranes exhibited the excellent saturable absorption properties at 1 and 1.3 µm. As a saturable absorber, passively Q-switched Nd:YVO lasers with the prepared hybrid MXene membranes were realized at 1 and 1.3 µm, respectively, producing the stable Q-switching pulse train with a shortest duration of 130 ns.
在本工作中，我们报道了通过氢氟酸蚀刻法合成的二维（2D）少层TiC(OH)/TiCF混合MXene的结构特性。利用各种表征手段来证明混合MXene膜的二维层状结构特性。密度泛函理论（DFT）模拟表明，混合MXene具有足够小的带隙，这有利于其在红外区域的非线性光学应用。通过传统的开孔Z扫描技术，测量到了典型的非线性饱和特性。因此，混合MXene膜在1μm和1.3μm处表现出优异的饱和吸收特性。作为饱和吸收体，分别在1μm和1.3μm处实现了基于制备的混合MXene膜的被动调Q Nd:YVO激光器，产生了最短持续时间为130ns的稳定调Q脉冲序列。
