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physics.optics2025
Asymptotically circularly polarized bound states in the continuum
Nan Zhang, Ya Yan Lu
We study a class of bound states in the continuum (BICs) in all-dielectric periodic structures, near which resonant states approach ideal circularly polarized states (CPSs). We ter…
physics.optics2025
Exploiting nonlinear incoherent image formation through linear volume metaoptics for inference
Nan Zhang, Arvin Keshvari, Ata Shakeri +1
We showed that a 2D depth map representing an incoherent 3D opaque scene is directly encoded in the response function of an imaging optics. As a result, the optics creates an image…
physics.optics2025
Super Bound States in the Continuum: Analytic Framework, Parametric Dependence, and Fast Direct Computation
Nan Zhang, Ya Yan Lu
In periodic structures such as photonic crystal (PhC) slabs, a bound state in the continuum (BIC) is always surrounded by resonant states with their -factor following $Q\sim 1/|…