Robust chirality is demonstrated by exploiting the merging of multiple accidental bound states in the continuum (BICs). This mechanism simultaneously sustains ultrahigh-quality factor
Q
resonances and strong chiroptical responses across a wide region of momentum space
achieving near-perfect circular dichroism (~0.99) and an ultrahigh-
Q
value (~10
4
) in a planar dielectric platform.
关键词
Keywords
references
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