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Optically switchable biphotonic gratings based on dye-doped cholesteric liquid crystal films
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10.1063/1.2752110
/content/aip/journal/apl/90/26/10.1063/1.2752110
http://aip.metastore.ingenta.com/content/aip/journal/apl/90/26/10.1063/1.2752110
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Schematic of the experimental setup for investigating optically switchable biphotonic gratings (BGs) in dye-doped cholesteric liquid crystal (DDCLC) films; : green beam; : red pump beams; : probe beam; , : polarizers; : quarter waveplate for .

Image of FIG. 2.
FIG. 2.

(a) Optical switching feature of the first-order diffraction beam from the BG and (b) the diffraction pattern of the probed red beam from a stable BG based on a DDCLC cell.

Image of FIG. 3.
FIG. 3.

Dynamics of transmitted intensity of a probe beam when an analyzer A (crossed with ) is inserted behind the cell during excitation of green beam with four intensities and a pumped red beam with an intensity of . The inset figure plots the variation of angle of rotation of the polarization of the probe beam due to the optical activity of the DDCLC cell with the green-beam intensity.

Image of FIG. 4.
FIG. 4.

Absorption spectrum of a D2-doped CLC cell in the dark (black line) and in the irradiation of with intensity of for (gray line).

Image of FIG. 5.
FIG. 5.

Variation of the first-order diffraction efficiency of a probe beam with relative intensity of green and red beams.

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/content/aip/journal/apl/90/26/10.1063/1.2752110
2007-06-25
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Optically switchable biphotonic gratings based on dye-doped cholesteric liquid crystal films
http://aip.metastore.ingenta.com/content/aip/journal/apl/90/26/10.1063/1.2752110
10.1063/1.2752110
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