Nonlinear Molecular Reorientation of Polymer-Stabilized Dye-Doped Liquid Crystals by Depolarized Laser Beam
2020 年 33 巻 1 号 p. 77-80
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2020 年 33 巻 1 号 p. 77-80
Liquid crystals (LCs) are the innovative materials that can control their molecular orientation using an optical field with a laser beam. However, the molecular orientation has been explored only by a polarized laser beam. In this study, we report the molecular reorientation of oligothiophene-doped LCs by an irradiation with a focused depolarized laser beam that has a spatial polarization pattern. Two self-diffraction rings occurred by nonlinear molecular reorientation induced by the irradiation with the focused depolarized laser beam. The threshold intensities measured by the focused depolarized laser beam were two times higher than that of the linearly polarized laser beam.
