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Time-domain signature of an axially excited cholesteric liquid crystal. Part II: Rectangular wide-extent pulses

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Solving the Maxwell equations directly in the time-domain using a newly developed accelerated algorithm, we examine the response of axially excited layers of cholesteric liquid crystals (CLCs) to rectangular wide-extent pulses (WEPs). Although the circular Bragg phenomenon certainly distorts a rectangular WEP when its bandwidth substantially lies within the Bragg regime and the carrier wave's handedness coincides with the structural handedness of a CLC layer, the pulse edges are still transmitted and appropriately coded information is thus not lost.

Keywords: Cholesteric liquid crystal; circular Bragg phenomenon; time domain analysis

Document Type: Original Article


Affiliations: CATMAS – Computational and Theoretical Materials Sciences Group, Department of Engineering Science and Mechanics, 212 Earth-Engineering Sciences Building, Pennsylvania State University, University Park, PA 16802-6812, USA

Publication date: February 1, 2001

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