Chinese Optics Letters, Volume. 15, Issue 8, 081203(2017)
Entanglement-free determination of pretilt angles of twisted nematic liquid-crystal cells by phase measurement
Figures & Tables(8)
Fig. 1. Coordinates of the incident light and the schematic diagram of the TN medium within a TN cell.
Fig. 2. (Color online) Phase difference of the TN cell versus the incident angle by varying the pretilt angle as a parameter.
Fig. 3. Data diagram of the pretilt angle versus the extreme angle.
Fig. 4. Configuration of the out-of-plane crystal rotation for the measurements.
Fig. 6. Solid curves are the results of the calculation by the extended Jones matrix method.
Table 1. TN LC Cell Parameters
View tableView in ArticleTable 1. TN LC Cell Parameters
Refractive Index Cell gap (μm) Twist angle (deg.) 1.600 3.3 90 ( ) 1.490 Wavelength (nm) 633
Table 2. Experimental Results: Pretilt Angle Measured by OPR Methods
View tableView in ArticleTable 2. Experimental Results: Pretilt Angle Measured by OPR Methods
Authors Pretilt angle (deg.) Birecki and Kahn [ 7 ]Wang and Yang [ 9 ]This work
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Che-Wen Chiang, Ping-Chun Lin, Kei-Hsiung Yang. Entanglement-free determination of pretilt angles of twisted nematic liquid-crystal cells by phase measurement[J]. Chinese Optics Letters, 2017, 15(8): 081203
Paper Information
Category: Instrumentation, measurement, and metrology
Received: Apr. 19, 2017
Accepted: May. 19, 2017
Published Online: Jul. 20, 2018
The Author Email: Che-Wen Chiang (t21601@yahoo.com.tw)
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