Multiple surface plasmon resonances enhanced nonlinear optical microscopy

Nanophotonics

article

Xiaohu Mi¹  Yuyang Wang¹  Rui Li²  Mengtao Sun³  Zhenglong Zhang¹  Hairong Zheng¹ 

[1] School of Physics and Information Technology, Shaanxi Normal University;School of Physics, Dalian University of Technology;Center for Green Innovation, School of Mathematics and Physics, Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface Science, University of Science and Technology Beijing

关键词: TPEF;    CARS;    MSPRs;    Au@Ag nanorods;    surface plasmon;   

DOI  :  10.1515/nanoph-2018-0231

学科分类：社会科学、人文和艺术（综合）

来源: De Gruyter

【 摘 要 】

The nonlinear optical microscopies of coherent two-photon excited fluorescence and anti-Stokes Raman scattering are strongly enhanced by multiple surface plasmon resonances (MSPRs). The Au@Ag nanorods presented strong MSPRs peaks at 800 and 400 nm, and can enhance nonlinear optical microscopy at fundamental and double frequencies, respectively. A two-dimensional (2D) material of g-C 3 N 4 is employed to study the plasmon-enhanced nonlinear optical microscopy by the femtosecond laser. The electric analysis reveals that the MSPRs of the Au@Ag nanorod can significantly enhance the signals of two-photon excited fluorescence and anti-Stokes Raman scattering by up to the orders of 10 4 and 10 16 , respectively. The results demonstrate the great advantages of plasmon-enhanced nonlinear optical microscopy for the optical analysis on 2D materials, thus providing a new adventure for increasing the optical resolutions of nonlinear optical microscopy.

【 授权许可】

CC BY