title: Large enhancement and uniform distribution of optical near field through combining periodic bowtie nanoantenna with rectangular nanoaperture array.
abstract: We present a novel (to the best of our knowledge) composite nanostructure composed of bowtie nanoantennas (BNAs) and rectangular nanoapertures, which provides a new way to improve the ability of the nanostructure to enhance the optical near field and obtain uniform near-field distribution in the z direction. It is specifically engineered to not only confine the incident light in the nanoscale but also to generate large localized near-field enhancement about 25 times larger than that of solitary BNAs. It also shows a more uniform near-field distribution in the z direction than that of solitary BNAs. The mechanisms of the large enhancement and the uniform near field are also discussed.
authors: The Key Laboratory of Weak Light Nonlinear Photonics, Ministry of Education, School of Physics and Teda Applied Physics School, Nankai University, Tianjin, China.
authors: Jianxiong
authors: J
authors: Li
authors: Shuqi
authors: S
authors: Chen
authors: Ping
authors: P
authors: Yu
authors: Hua
authors: H
authors: Cheng
authors: Wenyuan
authors: W
authors: Zhou
authors: Jianguo
authors: J
authors: Tian