Electrical and thermal tuning of quality factor and free spectral range of optical resonance of nematic liquid crystal microdroplets.
basic_science · Level V
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- Record sourced from PubMed, PMID 28950470.
- Also identified by DOI 10.1103/PhysRevE.96.022702.
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Abstract
We experimentally study the effect of temperature and electric field on the quality (Q) factor and free spectral range (FSR) of whispering-gallery-mode optical resonance of dye-doped nematic liquid crystal microdroplets. Both the Q factor and the FSR are highly sensitive to the temperature and electric field and are tunable. The Q factor decreases, whereas the FSR increases substantially, with increasing temperature and electric field. The variation of the Q factor and FSR is understood based on the change in the effective refractive index and the dynamic size of the microdroplets.