Achromatic linear polarization rotators by tandem twisted nematic liquid crystal cells

Autor: Te-Yuan Chung, Min-Cheng Tsai, Cheng-Kai Liu, Jia-Hao Li, Ko-Ting Cheng
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Zdroj: Scientific Reports, Vol 8, Iss 1, Pp 1-13 (2018)
Druh dokumentu: article
ISSN: 2045-2322
99814560
DOI: 10.1038/s41598-018-32168-w
Popis: Abstract 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.
Databáze: Directory of Open Access Journals
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