Influence of pretilt angle on disclination lines of liquid crystal lens

This article investigates the effect of pretilt angle on disclination lines of liquid crystal (LC) lenses. When the pretilt angle of LCs is higher than 7°, the disclination lines are reduced and are moved to the boundary of the LC lens. The disclination lines at the boundary do not influence the foc...

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Veröffentlicht in:Applied optics (2004) 2012-07, Vol.51 (19), p.4269-4274
Hauptverfasser: Kuo, Chia-Hao, Chien, Wei-Che, Hsieh, Chia-Ting, Huang, Chi-Yen, Jiang, Jyun-Jie, Li, Yan-Cheng, Chen, Ming-Fei, Hsieh, Yi-Ping, Kuo, Hui-Lung, Lin, Chi-Huang
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container_end_page 4274
container_issue 19
container_start_page 4269
container_title Applied optics (2004)
container_volume 51
creator Kuo, Chia-Hao
Chien, Wei-Che
Hsieh, Chia-Ting
Huang, Chi-Yen
Jiang, Jyun-Jie
Li, Yan-Cheng
Chen, Ming-Fei
Hsieh, Yi-Ping
Kuo, Hui-Lung
Lin, Chi-Huang
description This article investigates the effect of pretilt angle on disclination lines of liquid crystal (LC) lenses. When the pretilt angle of LCs is higher than 7°, the disclination lines are reduced and are moved to the boundary of the LC lens. The disclination lines at the boundary do not influence the focused beam profile of the LC lens. As the pretilt angle of LCs further increases, the disclination lines at the boundary become almost invisible. However, the interference rings become asymmetrical. The response time of an LC lens with a pretilt angle higher than 7° is ∼60% of the conventionally homogeneous LC lens. This value is a result of the decrease in the rotation angle of the LCs and the reduced disclination lines.
doi_str_mv 10.1364/AO.51.004269
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source Alma/SFX Local Collection; Optica Publishing Group Journals
subjects Asymmetry
Beams (radiation)
Boundaries
Disclinations
Interference
Lenses
Liquid crystals
Response time
title Influence of pretilt angle on disclination lines of liquid crystal lens
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