Purcell factor and local intensity enhancement in surface-enhanced Raman scattering

Nanophotonics

article

Stanislav I. Maslovski¹  Constantin R. Simovski² 

[1] Instituto de Telecomunicações and Departamento de Eletrónica, Universidade de Aveiro, Campus Universitário de Santiago;Aalto University, School of Electrical Engineering, Department of Electronics and Nanotechnology

关键词: Purcell factor;    local intensity enhancement;    surface-enhanced Raman scattering;    Green’s function;    reciprocity;   

DOI  :  10.1515/nanoph-2018-0190

学科分类：社会科学、人文和艺术（综合）

来源: De Gruyter

【 摘 要 】

We prove that, at any point of any reciprocal structure, the local field intensity enhancement, which is averaged over the incident wave polarizations and the incidence directions, exactly coincides with the radiative part of the Purcell factor, which is averaged over the orientations of the emitter. This result is important for gaining a better understanding of the electromagnetic Raman gain in the surface-enhanced Raman scattering and for the further development of this technique.

【 授权许可】

CC BY