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
- Chinese Optics Letters
- Vol. 15, Issue 8, 081203 (2017)
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. 5. Experimental phase versus the incident angle curves.
Fig. 6. Solid curves are the results of the calculation by the extended Jones matrix method.
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Table 1. TN LC Cell Parameters
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Table 2. Experimental Results: Pretilt Angle Measured by OPR Methods
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