Multiperiodic nanohole array for high precision sensing

Nanophotonics

article

Andre-Pierre Blanchard-Dionne¹  Michel Meunier¹ 

[1] Laser Processes and Plasmonics Laboratory, Engineering Physics Department

关键词: nanomaterials;    optical sensors;    subwavelength structure;    surface waves;   

DOI  :  10.1515/nanoph-2018-0108

学科分类：社会科学、人文和艺术（综合）

来源: De Gruyter

【 摘 要 】

In this article, we present a multiperiodic nanohole array structure for improved sensing. The structure consists a series of rows of nanoholes, each having a different period in an ascending order. A monochromatic source illuminates the structure, and a resonance condition is met for the row having a momentum matching Bloch wave, which leads to extraordinary optical transmission. With this new plasmonic structure, the sensing signal can be retrieved using the spatial position of the transmission maxima. This setup requires a simple optical setup while achieving increased resolution and accuracy. A resolution of 4.6×10 −6 refractive index units is achieved, which is comparable to surface plasmon resonance system based on the Kretchmann configuration.

【 授权许可】

CC BY