Abstract

Super-oscillatory lens has been demonstrated to focus the light into subwavelength spots in the farfield, without the assistance from evanescent wave [1]. It empowers realistic applications in super-imaging due to its farfield operation, with the price of strong sidelobes though. So far, the design of the super-oscillatory lens is more optimization-oriented and the harmonic contribution of every fine feature to the imagine plane is still unclear. In this talk, we will propose, for the first time, the explicit physical nature of super-oscillation theory in designing a superoscillatory lens. Thus it enables us to accomplish nanosieving plates which is experimentally demonstrated to have improved super-resolution imaging. Another important issue of dealing with strong sidelobe of super-oscillatory lens is tackled by zero stitching and the sidelobe, though not being able to eliminate, can be pushed far away from the super-resolution spot in the center. It paves a new scheme in farfield super-imaging which can be obtained and integrated in conventional microscope.

© 2013 Japan Society of Applied Physics, Optical Society of America