Tunable hybrid optical modes in a bounded cholesteric liquid crystal with a twist defect.
basic_science · Level V
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- Record sourced from PubMed, PMID 29776094.
- Also identified by DOI 10.1103/PhysRevE.97.032703.
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Abstract
Coupling between the defect mode of a cholesteric liquid crystal and the localized mode of a cholesteric liquid crystal-phase plate-metal structure is theoretically demonstrated. It is shown that the transmittance spectrum can be tuned by changing the twist-defect angle and helix pitch, which are governed by external factors. The spectra for different circular polarizations of the incident light are different; specifically, at the nondiffracting polarization, there is no defect-mode transmittance peak.