Abstract
The super focusing effect in tapered metal nano-structure is analyzed and discussed with discrete dipole approximation (DDA) method. Numerical result proves that the light field can be focused to nano-scale spot within this structure, and the relation between its super focusing ability and incident wavelength, structure’s vertex angle, thickness and metal’s dissipation is discussed, based on both analytic and numerical model. The results suggest that the electric field can be enhanced decades even hundreds times with properly designed parameters, which leads to a significant super focusing effect of light field. It also proves that the metal nano-structure can be modeled by DDA method with good simulation precision and speed.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
