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Nonlinear optical grating diffraction in dye-doped blue-phase liquid crystals |
Optics Letters, Vol. 37, Issue 15, pp. 3225-3227 (2012)
http://dx.doi.org/10.1364/OL.37.003225
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Abstract
Low-power cw lasers are employed to study grating formation in blue-phase liquid crystals. We observed that undoped samples exhibit vanishingly small optical nonlinearities whereas methyl-red-dye doped samples produce strong nonlinear self-diffraction effects. The nonlinearities are attributed to director axis reorientation, disorder, and lattice distortion by the laser-excited dye molecules. The magnitude of the observed intensity-dependent index coefficient is in the range of
© 2012 Optical Society of America
OCIS Codes
(160.3710) Materials : Liquid crystals
(160.4330) Materials : Nonlinear optical materials
(190.3270) Nonlinear optics : Kerr effect
(160.5298) Materials : Photonic crystals
ToC Category:
Materials
History
Original Manuscript: June 4, 2012
Revised Manuscript: June 27, 2012
Manuscript Accepted: June 28, 2012
Published: July 27, 2012
Citation
I. C. Khoo and Tsung-Hsien Lin, "Nonlinear optical grating diffraction in dye-doped blue-phase liquid crystals," Opt. Lett. 37, 3225-3227 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-15-3225
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