YIN Ping,LIN Qiang,RUAN Yi,CHEN Jing-jing.Investigation of multiple metal nanoparticles near-field coupling on the surface by discrete dipole approximation method[J].Optoelectronics Letters,2021,17(5):257-261 Investigation of multiple metal nanoparticles near-field coupling on the surface by discrete dipole approximation method Author Name Affiliation YIN Ping  Zhejiang Provincial Key Laboratory & Collaborative Innovation Center for Quantum Precision Measurement, College of Science, Zhejiang University of Technology, Hangzhou 310023, China  LIN Qiang  Zhejiang Provincial Key Laboratory & Collaborative Innovation Center for Quantum Precision Measurement, College of Science, Zhejiang University of Technology, Hangzhou 310023, China  RUAN Yi  Zhejiang Provincial Key Laboratory & Collaborative Innovation Center for Quantum Precision Measurement, College of Science, Zhejiang University of Technology, Hangzhou 310023, China  CHEN Jing-jing  College of Zhijiang, Zhejiang University of Technology, Shaoxing 312000, China  Abstract:       We use the method of discrete dipole approximation with surface interaction to construct a model in which a plurality of nanoparticles is arranged on the surface of BK7 glass. Nanoparticles are in air medium illuminated by evanescent wave generated from total internal reflection. The effects of the wavelength, the polarization of the incident wave, the number of nanoparticles and the spacing of multiple nanoparticles on the field enhancement and extinction efficiency are calculated by our model. Our work could pave the way to improve the field enhancement of multiple nanoparticles systems. Hits: 906 Download times: 2 View Full Text    Download reader