[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
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
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
Tunable polarization-independent dual-band coherent perfect absorber based on metal-graphene nanoring structure.
Sign Up to like & getrecommendations! Published in 2018 at "Optics express"
DOI: 10.1364/oe.26.021768
Abstract: A dual-band polarization-independent coherent perfect absorber(CPA) based on metal-graphene nanostructure is proposed, which is composed of golden nanorings with different sizes on graphene monolayer. Based on the finite-difference time-domain (FDTD) solutions, coherent perfect absorptions of… read more here.
Keywords: band; metal graphene; polarization; coherent perfect ... See more keywords
Dynamically tunable coherent perfect absorption in topological insulators at oblique incidence.
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DOI: 10.1364/oe.435440
Abstract: The effective engineering of light absorption has been the focus of intensive research to realize the novel optoelectronic devices based on a topological insulator, a unique topologically protected surface Dirac-state quantum material with excellent prospects… read more here.
Keywords: absorption; dynamically tunable; perfect absorption; coherent perfect ... See more keywords
Broad-angle coherent perfect absorption-lasing and super-collimation in two-dimensional non-Hermitian photonic crystals.
Sign Up to like & getrecommendations! Published in 2022 at "Optics express"
DOI: 10.1364/oe.481141
Abstract: Coherent perfect absorption-lasing (CPAL) and collimation have been intensively studied for normal and small angle wave incidence. Here, we report a two-dimensional non-Hermitian photonic crystal for broad-angle CPAL and super-collimation. The synergy of a nonsymmorphic… read more here.
Keywords: collimation; two dimensional; absorption lasing; dimensional non ... See more keywords