[INVITED] Coherent perfect absorption of electromagnetic wave in subwavelength structures
Sign Up to like & getrecommendations! Published in 2018 at "Optics and Laser Technology"
DOI: 10.1016/j.optlastec.2017.12.004
Abstract: Abstract Electromagnetic (EM) absorption is a common process by which the EM energy is transformed into other kinds of energy in the absorber, for example heat. Perfect absorption of EM with structures at subwavelength scale… read more here.
Keywords: absorption; invited coherent; perfect absorption; coherent perfect ... See more keywords
Coherent Perfect Absorption in Metamaterials with Entangled Photons
Sign Up to like & getrecommendations! Published in 2017 at "ACS Photonics"
DOI: 10.1021/acsphotonics.7b00514
Abstract: Quantum nonlocality, i.e., the presence of strong correlations in spatially separated systems that are forbidden by local realism, lies at the heart of quantum communications and quantum computing. Here, we use polarization-entangled photon pairs to… read more here.
Keywords: absorption; photon; perfect absorption; coherent perfect ... See more keywords
Topological hysteretic winding for temporal anti-lasing
Sign Up to like & getrecommendations! Published in 2025 at "Nature Communications"
DOI: 10.1038/s41467-025-61282-3
Abstract: Coherent perfect absorption (CPA), or anti-lasing, has been so far inherently restricted to continuous wave scenarios, drastically restricting its applications to standard linear steady-state systems. However, future technologies based on enhanced light-matter interactions typically require… read more here.
Keywords: coherent perfect; perfect absorption; anti lasing; absorption ... See more keywords
Compact coherent perfect absorbers using topological guided-mode resonances
Sign Up to like & getrecommendations! Published in 2024 at "Scientific Reports"
DOI: 10.1038/s41598-024-63605-8
Abstract: We propose a topological coherent perfect absorber that enables almost ideal performance with remarkably compact device footprint and tight incident beams. The proposed structure is based on a topological junction of two guided-mode-resonance gratings. The… read more here.
Keywords: coherent perfect; guided mode; absorbers using; perfect absorbers ... See more keywords
Linear and nonlinear coherent perfect absorbers on simple layers
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review A"
DOI: 10.1103/physreva.97.063850
Abstract: We consider linear and nonlinear optical coherent perfect absorbers (CPAs) in multidimensional geometries and construct explicitly the respective perfectly absorbed solutions. The multidimensional CPAs have a structure of the so-called simple layers which represent the… read more here.
Keywords: linear nonlinear; perfect absorbers; coherent perfect; cpas ... See more keywords
Low-Threshold Lasing and Coherent Perfect Absorption in Generalized PT -Symmetric Optical Structures
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review Applied"
DOI: 10.1103/physrevapplied.10.024030
Abstract: Achieving exact balance between spatially separated gain and loss is generally regarded as a necessary condition for parity–time (PT)-symmetric optical systems [1]-[12]. We introduce generalized PT (gPT)-symmetric optical structures, which have an asymmetric and unbalanced… read more here.
Keywords: threshold lasing; coherent perfect; symmetric optical; low threshold ... See more keywords
Ultrasound underwater coherent perfect absorbers
Sign Up to like & getrecommendations! Published in 2025 at "Physical Review Applied"
DOI: 10.1103/physrevapplied.23.054023
Abstract: In this paper, we propose a coherent perfect absorber for the underwater ultrasound regime (MHz frequencies), inspired by the mechanism of Salisbury, which relies on reflective conductive sheets. By leveraging a silicon-based acoustoelastic metasurface with… read more here.
Keywords: underwater coherent; coherent perfect; perfect absorbers; ultrasound underwater ... See more keywords
Coherent Perfect Absorber Based on Antisymmetric Metasurface With Gain Material
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Photonics Journal"
DOI: 10.1109/jphot.2020.2992100
Abstract: In this paper, we proposed a two ports coherent perfect absorber based on antisymmetric metasurface with gain material which is able to effectively regulate the absorption of the coherent incident wave under the condition of… read more here.
Keywords: coherent; coherent perfect; perfect absorber; gain material ... See more keywords
Massively degenerate coherent perfect absorber for arbitrary wavefronts
Sign Up to like & getrecommendations! Published in 2022 at "Science"
DOI: 10.1126/science.abq8103
Abstract: One of the key insights of non-Hermitian photonics is that well-established concepts such as the laser can be operated in reverse to realize a coherent perfect absorber (CPA). Although conceptually appealing, such CPAs are limited… read more here.
Keywords: cavity; absorption; perfect absorber; coherent perfect ... See more keywords
Scheme for achieving coherent perfect absorption by anisotropic metamaterials.
Sign Up to like & getrecommendations! Published in 2017 at "Optics express"
DOI: 10.1364/oe.25.004860
Abstract: We propose a unified scheme to achieve coherent perfect absorption of electromagnetic waves by anisotropic metamaterials. The scheme describes the condition on perfect absorption and offers an inverse design route based on effective medium theory… read more here.
Keywords: absorption; perfect absorption; coherent perfect; anisotropic metamaterials ... See more keywords
Multiband coherent perfect absorption in a water-based metasurface.
Sign Up to like & getrecommendations! Published in 2017 at "Optics express"
DOI: 10.1364/oe.25.015737
Abstract: We design an ultrathin water-based metasurface capable of coherent perfect absorption (CPA) at radio frequencies. It is demonstrated that such a metasurface can almost completely absorb two symmetrically incident waves within four frequency bands, each… read more here.
Keywords: absorption; coherent perfect; water; based metasurface ... See more keywords