Dynamic studies of holographic gratings in dye-doped liquid-crystal films
Optics Letters, Vol. 26, Issue 22, pp. 1767-1769 (2001)
http://dx.doi.org/10.1364/OL.26.001767
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Abstract
The dynamic behavior of a holographic grating induced in a homeotropically aligned dye-doped liquid-crystal film is investigated. In the presence of an applied dc voltage, photoexcited azo dyes induce a photorefractive grating and then diffuse and are adsorbed onto cell substrates. The reorientation of liquid crystals as a result of adsorbed dyes leads to a phase grating that is phase shifted 90° from the photorefractive grating. Competition of these two gratings induces two-beam coupling of the writing beams, initially transferring energy from beam 1 to beam 2 and then, after a pause, from beam 2 to beam 1.
© 2001 Optical Society of America
OCIS Codes
(050.2770) Diffraction and gratings : Gratings
(090.2900) Holography : Optical storage materials
(190.5330) Nonlinear optics : Photorefractive optics
(210.4810) Optical data storage : Optical storage-recording materials
Citation
Andy Y.-G. Fuh, C.-C. Liao, K.-C. Hsu, C.-L. Lu, and C.-Y. Tsai, "Dynamic studies of holographic gratings in dye-doped liquid-crystal films," Opt. Lett. 26, 1767-1769 (2001)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-26-22-1767
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