NANO-ANTENNAS MODELING WITH BOR-FDTD AND INVESTIGATING EFFECT OF DISTANCE ON FLUORESCENCE

By applying BOR-FDTD method، fluorescence enhancement by using nano-antennas is investigated. Details of computational method are described including، updating equations، source، detector، absorbing boundary conditions. It is shown that fluorescence enhancement depends on nano-antenna features، ambient environment، the wavelength of incident light and the distance between emitter and nano-antenna. By the precise investigation of the impact of distance on the parameters effective in fluorescence enhancement (Purcell factor، antenna gain، the electric field intensity) we show that by setting the appropriate emitter distance from nano-antenna the highest enhancement can be obtained.