Achromatic linear polarization rotators by tandem twisted nematic liquid crystal cells

Te Yuan Chung, Min Cheng Tsai, Cheng Kai Liu, Jia Hao Li, Ko Ting Cheng

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11 Scopus citations


An achromatic linear polarization rotator based on a tandem-2ϕ-twisted nematic liquid crystal cell (tandem-2ϕ-TNLC cell, where 2ϕ represents the total twisted angle) is theoretically analyzed and experimentally demonstrated. The tandem-2ϕ-TNLC cell comprises two conventional ϕ-TNLC cells with the required arrangement that the LC director close to the last layer of the first ϕ-TNLC cell should be perpendicular to that close to the first layer of the second ϕ-TNLC cell. With such a simple combination, the TNLC performances are considerably improved. According to the experimental results and theoretical analyses by Jones Calculus, the tandem-2ϕ-TNLC polarization rotator with suitable parameters is achromatic and insensitive to the polarization plane of incident light. Such properties provide these polarization rotators with potential for practical applications.

Original languageEnglish
Article number13691
JournalScientific Reports
Issue number1
StatePublished - 1 Dec 2018


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