Reflection color filters of the three primary colors with wide viewing angles using commonthickness silicon subwavelength gratings

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Abstract

We fabricated reflection color filters of the three primary colors with wide viewing angles using silicon two-dimensional subwavelength gratings on the same quartz substrate. The grating periods were 400, 340, and 300 nm for red, green, and blue filters, respectively. All of the color filters had the same grating thickness of 100 nm, which enabled simple fabrication of a color filter array. Reflected colors from the red, green, and blue filters under s-polarized white-light irradiation appeared in the respective colors at incident angles from 0 to 50°. By rigorous coupledwave analysis, the dimensions of each color filter were designed, and the calculated reflectivity was compared with the measured reflectivity.

Original languageEnglish
Pages (from-to)25663-25672
Number of pages10
JournalOptics Express
Volume22
Issue number21
DOIs
Publication statusPublished - 2014 Oct 20

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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