Light pressure on chiral sculptured thin films and the circular Bragg phenomenon |
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Authors: | Benjamin M Ross |
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Institution: | Computational & Theoretical Materials Sciences Group (CATMAS), Department of Engineering Science & Mechanics, Pennsylvania State University, University Park, PA 16802-6812, USA |
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Abstract: | For a circularly polarized plane wave incident normally on a chiral sculptured thin film (STF), we determined that light pressure per unit thickness on the film is high when the incident plane wave and the chiral STF are co-handed, the loss factor in the chiral STF is as low as possible, the wavelength is either the center-wavelength of the Bragg regime or close to it, and the ratio of the film thickness normalized by the period is moderately high. |
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Keywords: | Circular Bragg phenomenon Light pressure Maxwell stress dyadic Sculptured thin films Structural chirality |
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