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Physical Review A

Tuning coherent perfect absorption in nonlocal anisotropic composite media

Yifei Sun, 童云海, Yufeng Dong, Xu Zhang, Wenjing Yu, Hongli Chen

Published Apr 7, 2026• 0 citations
Publisher
DOI
10.1103/zmxv-hwk3

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In the past few years, a new phenomenon of absorption, called “coherent perfect absorption (CPA)”, has attracted significant attentions [1, 2]. CPA relies on the coherent interference of light. In a typical CPA system, two coherent beams are incident on the absorber from opposite sides and the reflected light of one beam interfere with the transmitted light of the other and vice versa. CPA was first realized using a silicon slab cavity, and has then been reported in composite absorptive films, planar metamaterials, graphene, waveguides and so on.