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Fast-switching phase gratings using in-plane addressed short-pitch polymer stabilized chiral nematic liquid crystals
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10.1063/1.3670041
/content/aip/journal/apl/99/25/10.1063/1.3670041
http://aip.metastore.ingenta.com/content/aip/journal/apl/99/25/10.1063/1.3670041
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(Color online) Illustration of (a) the device configuration and (b) the change of the optical indicatrix with an applied electric field.

Image of FIG. 2.
FIG. 2.

(Color online) Photograph of the short pitch polymer-stabilized chiral nematic liquid crystal between crossed polarizers for an electric field strength of E = 14 V/µm with a bipolar square wave at a frequency of 1 kHz. The grating period is Λ = 13 μm. A plot of the intensity profile is also shown.

Image of FIG. 3.
FIG. 3.

(Color online) Photographs of the far-field diffraction pattern for different electric field strengths of a bipolar square wave with a frequency of 1 kHz. (a) E = 0 V/µm, (b) E = 7 V/µm, (c) E = 14 V/µm, and (d) E = 29 V/µm. (e) The intensity profile of the diffraction pattern for E = 29 V/µm. The incident laser wavelength was λ = 632.8 nm and the results are for an input polarization that is parallel to the E-field direction.

Image of FIG. 4.
FIG. 4.

A plot of the ratio In /I Total (the intensity of the nth diffraction order/the total intensity of the zeroth order for E = 0 V/µm) as a function of the electric field strength. Three orders are shown: zeroth (squares), +1st (circles), and +2nd (triangles) orders. The inset corresponds to the theoretical results obtained using the expressions provided in Eqs. (1) and (2).

Image of FIG. 5.
FIG. 5.

Response times of the diffraction grating to an isolated bipolar pulse train as a function of the electric field strength. Rise times (squares) and fall times (circles).

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/content/aip/journal/apl/99/25/10.1063/1.3670041
2011-12-20
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Fast-switching phase gratings using in-plane addressed short-pitch polymer stabilized chiral nematic liquid crystals
http://aip.metastore.ingenta.com/content/aip/journal/apl/99/25/10.1063/1.3670041
10.1063/1.3670041
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