Phase transition through the splitting of self-dual spectral singularity in optical potentials.
Sign Up to like & getrecommendations! Published in 2017 at "Optics letters"
DOI: 10.1364/ol.42.005206
Abstract: We consider optical media, which feature antilinear symmetries. We show that (i) spectral singularities of such media (if any) are always self-dual, i.e., correspond to coherent perfect absorber lasers; (ii) under the change of a… read more here.
Keywords: phase transition; self dual; dual spectral; spectral singularity ... See more keywords
Dual spectral limited-angle CT imaging regularized by edge-preserving diffusion and smoothing.
Sign Up to like & getrecommendations! Published in 2023 at "Journal of X-ray science and technology"
DOI: 10.2139/ssrn.4264039
Abstract: Limited-angle CT scan is an effective way for nondestructive inspection of planar objects, and various methods have been proposed accordingly. When the scanned object contains high-absorption material, such as metal, existing methods may fail due… read more here.
Keywords: spectral limited; limited angle; angle imaging; dual spectral ... See more keywords