关键词：局域场；场增强；光学天线；偶极天线；贴片天线；设计
摘 要：In this dissertation, we theoretically derived the local enhancement of the optical antenna and found that optimized radiation and small gap spacing are required for maximum field enhancement of the antenna. To address these parameters, we experimentally demonstrated three different designs of optical antennas. First, we report on applying a dipole antemma on a ground plane for radiation engineering. Secondly, we report on a patch antenna on gound plane for the uniform sub-5 nm gap spacing. Finally, we present a novel optical antenna design—thearch-dipole antenna—which has radiation efficiency and small gap spacing(5 nm) fabricated by CMOS-compatible deep-UV spacer lithography.