title: Guided-mode resonant polarization-controlled tunable color filters.
abstract: We demonstrate efficient guided-mode resonant polarization-controlled tunable color filters. The devices consist of subwavelength gratings that are partially etched into a thin silicon-nitride film deposited on a glass substrate. Two color filters with grating periods of 300 nm and 370 nm are designed and fabricated. The 300-nm device exhibits green and blue colors and the 370-nm device generates red and yellow colors for TE and TM polarization, respectively. The pixels have a spectral bandwidth of ~12 nm with efficiencies exceeding 90% for TE polarization and 80% for TM polarization. The devices may find application in displays, image sensors, and biomedical imaging technologies.
authors.forename: Mohammad Jalal
authors.initials: MJ
authors.lastname: Uddin
authors.forename: Tanzina
authors.initials: T
authors.lastname: Khaleque
authors.forename: Robert
authors.initials: R
authors.lastname: Magnusson