Beam manipulating by metallic nano-optic lens containing nonlinear media

Changjun Min, Pei Wang, Xiaojin Jiao, Yan Deng, Hai Ming
2007 Optics Express  
Embedding nonlinear media in the slit region of metallic nanooptic lens is proposed as a new method of active modulating the output beam. Two important phenomena, beam deflection and focusing, have been studied in detail. A developed Finite Difference Time Domain (FDTD) method has been performed to account for the nonlinear response. The simulated results show that the deflection angle and focus length can be controlled easily by the intensity of incident light in the structures. The physical
more » ... res. The physical principle of the phenomena is explained by the Surface Plasmons (SPs) excitation and Fabry-Pérot (F-P) resonance in the nanoslit.
doi:10.1364/oe.15.009541 pmid:19547302 fatcat:5b7weq37yngcdiyt6zn5dbv5um