Fabrication of a bilayer wire grid polarizer in the near infrared wavelength region by using a UV curing nanoimprinting method
- Authors
- Lee, Yong Ho; Peranantham, Pazhanisami; Hwangbo, Chang Kwon; Kim, Seok-Min
- Issue Date
- Nov-2012
- Publisher
- KOREAN PHYSICAL SOC
- Keywords
- Bilayer wire grid polarizer; Subwavelength grating; Nanoimprint lithography
- Citation
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY, v.61, no.10, pp 1714 - 1719
- Pages
- 6
- Journal Title
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY
- Volume
- 61
- Number
- 10
- Start Page
- 1714
- End Page
- 1719
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/52961
- DOI
- 10.3938/jkps.61.1714
- ISSN
- 0374-4884
1976-8524
- Abstract
- In this study, we have designed and fabricated an Al bilayer wire grid polarizer (B-WGP) in the near-infrared wavelength region. A finite difference time domain method was employed to design and analyze the subwavelength B-WGP with a period of 450 nm, a grating height of 150 nm, and a duty cycle of 0.5. The high polarization extinction ratio of 1200 indicates that the B-WGP may be used as a normal incidence polarization beam splitter. A subwavelength polymer pattern was fabricated by using an UV curing nanoimprinting method, and an Al thin film was deposited by using a thermal evaporation method. The experimental results show that the transmittance of the TM-wave of the B-WGP is over 50% at wavelengths in the range 1000 similar to 2000 nm wavelength while the transmittance of the TE-wave is less than 1%, and that the polarization extinction ratio 250. The discrepancies between the simulated and the experimental results are discussed.
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Collections - College of Engineering > School of Mechanical Engineering > 1. Journal Articles
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