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A polarization-independent liquid crystal phase modulation using polymer-network liquid crystals in a 90° twisted cell
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10.1063/1.4737260
/content/aip/journal/jap/112/2/10.1063/1.4737260
http://aip.metastore.ingenta.com/content/aip/journal/jap/112/2/10.1063/1.4737260
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Structure and operating principles of T-PNLC. (a) At V = 0, LC directors near two glass substrates are orthogonal to each other, and LC directors are parallel to z-direction in the middle region. (b) At V1 > Vth, LC directors near two glass substrates are reoriented by the electric field. (c) At V2 ≫ Vth, LC directors are perpendicular to the glass substrate.

Image of FIG. 2.
FIG. 2.

(a) The side view of SEM image of T-PNLC, and (b) the magnification image of polymer networks of (a). (c) The image of T-PNLC under two crossed polarizers. P and A are the transmissive axes of the polarizer and the analyzer.

Image of FIG. 3.
FIG. 3.

Transmittance as a function of voltage for pure LC cell (gray line), T-PNLC at Vc = 2.5 Vrms (dotted line), and T-PNLC at Vc = 4 Vrms (black line). Phase shift as a function of voltage for T-PNLC at Vc = 2.5 Vrms (hollow ones) and T-PNLC at Vc = 4 Vrms (solid ones). Blue solid/hollow diamonds, green solid/hollow triangles, red solid/hollow squares stand for the angle of polarizer of 0°, 45°, 90°, respectively. Black solid/hollow circles represent unpolarized light.

Image of FIG. 4.
FIG. 4.

The illustration of the relative coordinates between the incident-oblique light and the sample.

Image of FIG. 5.
FIG. 5.

d1 as a function of θp at different (a) for Vc = 2.5 Vrms and (b) for Vc = 4 Vrms. The intersections of the curves represent the solutions of θp andd1. Black solid dots represent  = 0, red hollow squares represent =±7°, blue solid triangles represent = ±10°, green hollow dots represent = ±12°, and gray hollow diamonds represent = ±15°.

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/content/aip/journal/jap/112/2/10.1063/1.4737260
2012-07-18
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: A polarization-independent liquid crystal phase modulation using polymer-network liquid crystals in a 90° twisted cell
http://aip.metastore.ingenta.com/content/aip/journal/jap/112/2/10.1063/1.4737260
10.1063/1.4737260
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