Broadband nanowire-grid polarizers in ultraviolet-visible-near-infrared regions

Z. Y. Yang, Y. F. Lu

Research output: Contribution to journalArticlepeer-review

66 Scopus citations

Abstract

Broadband nanowire-grid polarizers were designed and numerically simulated using the finite difference time domain (FDTD) method. Using a broadband stimulation source, optical properties of the polarizers were analyzed in the ultraviolet (UV)-visible-near infrared (NIR) regions. Specifically, the extinction ratios and optical transmittances of transverse magnetic (TM) and transverse electric (TE) modes were characterized for different metal materials and geometrical parameters including wire-grid periods, metal-wire fill ratios, and spacing between wire-grid layers. Based on the simulation results, an extra broadband polarizer with an average extinction ratio higher than 70 dB and transmission efficiency over 64% in the range of 0.3 to 5 μm was proposed.

Original languageEnglish (US)
Pages (from-to)9510-9519
Number of pages10
JournalOptics Express
Volume15
Issue number15
DOIs
StatePublished - Jul 23 2007

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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