METHOD AND APPARATUS FOR SURFACE PLASMON SWITCHING BY INTERFERENCE OF TWO BEAMS

摘要

The present invention forms a metallic slit or an opening on a thin metal film and makes a surface plasmon antisymmetrically or symmetrically detached by the interference pattern of two incident lights having the same incident angle in opposite directions. A direction in which the surface plasmon is detached is switched as the relative phase difference between the two incident lights is adjusted. [Reference numerals] (1:) Device for surface plasmon switching; (20) Light irradiation unit; (30) Measuring unit; (AA) Slit thickness; (BB) Slit width; (CC) Metal layer; (DD) Incident light on the left; (EE) Vertical line; (FF) Incident light on the right