纳米结构的局域表面等离子体共振效应能够突破衍射极限实现对光信号的局域调控, 自发现以来就引起了光学领域的广泛关注, 并成为一大研究热点。从对局域光场增强效应到超材料的实现, 表面等离子体都扮演着重要的角色。综述了基于纳米结构的局域表面等离子体的超快非线性光学现象及其应用研究, 重点介绍了非传统表面等离子体纳米材料(重掺杂半导体)的饱和吸收效应, 以及其在超快脉冲激光器中的应用, 并对其发展前景进行了展望。

Due to the ability of local control of light by breaking through the limit of light diffraction, nanostrucrures with localized surface plasmon resonance (LSPR) have gained plenty of attention from the photonic community since its origin. LSPR has played important roles ranging from localized field enhancement effects to the realization of metamaterials. This paper briefly summarizes ultrafast nonlinear optics of nanostructures with LSPR and its applications, with an emphasis on saturable absorption effect of unconventional surface plasmon nanomaterials and their applications in ultrafast lasers. Finally, a prospect for its potential developments is given.