Design and Fabrication of nanowire-grid polarizer in near-infrared broadband

Qiufeng Jin; Quan Liu; Jianhong Wu; Yu Cheng

doi:10.1117/12.999776

26 November 2012 Design and Fabrication of nanowire-grid polarizer in near-infrared broadband

Qiufeng Jin, Quan Liu, Jianhong Wu, Yu Cheng

Proceedings Volume 8556, Holography, Diffractive Optics, and Applications V; 85561F (2012) https://doi.org/10.1117/12.999776
Event: Photonics Asia, 2012, Beijing, China

Abstract

The infrared polarizers are widely used in the infrared imaging systems as the core components, such as infrared stealth, target acquisition and mine detection, automobile night-vision instrument and other systems. For the requirements of near-infrared imaging systems, a nanowire-grid is designed by Finite Difference Time Domain (FDTD) method. Herein, considering the high reflection of metal aluminum in the manufacturing process, we propose a structure with aluminum-copper nanowire-grid. FDTD method is adapted to analyze the effects of the thickness of aluminumcopper in different combinations on the TM and TE polarization transmission efficiency as well as the extinction ratio when the grating’s period is 300nm. Numerical results and theoretical analysis show that: the reflection on the substrate is suppressed with the optimal thickness of the Cu layer. Considering the resist-substrate reflectivity and the final performance of the polarizer, the structure with an 120nm Al layer, and a 50nm anti-reflection Cu layer is chosen; and the TM transmission efficiency is more than 71%, and the extinction ratio is more than 25dB. At last we used Holographic lithography and IBE to fabricate a prototype of the nanowire-grid.

Citation Download Citation

Qiufeng Jin, Quan Liu, Jianhong Wu, and Yu Cheng "Design and Fabrication of nanowire-grid polarizer in near-infrared broadband", Proc. SPIE 8556, Holography, Diffractive Optics, and Applications V, 85561F (26 November 2012); https://doi.org/10.1117/12.999776

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
7 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Polarizers

Aluminum

Copper

Metals

Reflectivity

Holography

Finite-difference time-domain method

Show All Keywords

Keywords/Phrases

Search In:

Publication Years