Perfect ultra-narrow band absorber based on lamellar structure for refractive index sensing

Li Yu; Huixuan Gao; Shuwen Chu; Qiao Wang; Wei Peng

doi:10.1117/12.2548796

20 December 2019 Perfect ultra-narrow band absorber based on lamellar structure for refractive index sensing

Li Yu, Huixuan Gao, Shuwen Chu, Qiao Wang, Wei Peng

Proceedings Volume 11209, Eleventh International Conference on Information Optics and Photonics (CIOP 2019); 1120935 (2019) https://doi.org/10.1117/12.2548796
Event: Eleventh International Conference on Information Optics and Photonics (CIOP 2019), 2019, Xi'an, China

Abstract

In this paper, we theoretically investigate a tunable ultra-narrow band absorber consisting of lamellar structure in the near-infrared wavelength range. The absorption efficiency is 99.9% under normal incidence and the full width at half maximum (FWHM) is only 4nm. The high absorption is attributed to the surface plasmon resonance (SPR), which increases the interaction volume of the optical field. The ultra-narrow band absorber has a high refractive index sensitivity of 1208nm/RIU in a wide refractive index range of 1.33 to 1.40 and a high figure of merit of 302. Besides, the influence of structure parameters on the sensing performance are also investigated. Due to its easiness to be fabricated, the proposed structure has potential in sensing application.

Citation Download Citation

Li Yu, Huixuan Gao, Shuwen Chu, Qiao Wang, and Wei Peng "Perfect ultra-narrow band absorber based on lamellar structure for refractive index sensing", Proc. SPIE 11209, Eleventh International Conference on Information Optics and Photonics (CIOP 2019), 1120935 (20 December 2019); https://doi.org/10.1117/12.2548796

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
6 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Refractive index

Absorption

Gold

Reflectivity

Structural design

Reflection

Plasmonics

Show All Keywords

Keywords/Phrases

Search In:

Publication Years