Broadband Coherent Perfect Absorber with PT-Symmetric 2D-Materials
arXiv:1905.05795 · doi:10.1016/j.aop.2018.12.008
Abstract
We suggest graphene and a two-dimensional (2D) Weyl semimetal (WSM) as 2D materials for the realization of a broadband coherent perfect absorber (CPA) respecting overall PT-symmetry. We also demonstrate the conditions for mutually equal amplitudes and phases of the left and right incoming waves to realize a CPA. 2D materials in our system play the role to enhance the absorption rate of a CPA once the appropriate parameters are inserted in the system. We show that a 2D WSM is more effective than graphene in obtaining the optimal conditions. We display the behavior of each parameter governing the optical system and show that optimal conditions of these parameters give rise to enhancement and possible experimental realization of a broadband CPA-laser.
arXiv comment13 pages, 4 figures
References in corpus (32)
- Detection of Individual Gas Molecules Absorbed on Graphene
- Real Spectra in Non-Hermitian Hamiltonians Having PT Symmetry
- Dielectric function, screening, and plasmons in 2D graphene
- Mixed-Dimensional van der Waals Heterostructures
- Coherent Perfect Absorbers: Time-reversed Lasers
- Dynamical polarization of graphene at finite doping
- PT-symmetric laser-absorber
- Spectral Singularities of Complex Scattering Potentials and Infinite Reflection and Transmission Coefficients at real Energies
- Coherent perfect absorbers: linear control of light with light
- Direct optical detection of Weyl fermion chirality in a topological semimetal
- Electron optics with ballistic graphene junctions
- Coherent perfect absorption in deeply subwavelength films in the single photon regime
- Tunable terahertz coherent perfect absorption in a monolayer graphene
- Tunable mid-infrared coherent perfect absorption in a graphene meta-surface
- Optical Spectral Singularities as Threshold Resonances
- Unconventional modes in lasers with spatially varying gain and loss
- Theory of Kerr and Faraday rotations and linear dichroism in Topological Weyl Semimetals
- Invisibility in non-Hermitian tight-binding lattices
- Coherent control of light interaction with graphene
- Spectral Singularities, Biorthonormal Systems, and a Two-Parameter Family of Complex Point Interactions
- Coherent perfect absorption in a homogeneously-broadened two-level medium
- Self-dual Spectral Singularities and Coherent Perfect Absorbing Lasers without PT-symmetry
- Time-reversed optical parametric oscillation
- Spectral Singularities of a Complex Spherical Barrier Potential and Their Optical Realization
- Unidirectional reflectionlessness and invisibility in the TE and TM modes of a PT-symmetric slab system
- Optical Spectral Singularities and Coherent Perfect Absorption in a Two-Layer Spherical Medium
- Spectral Singularities and Whispering Gallery Modes of a Cylindrical Gain Medium
- Gate-tunable coherent perfect absorption of terahertz radiation in graphene
- Lasing Threshold Condition for Oblique TE and TM Modes, Spectral Singularities, and Coherent Perfect Absorption
- Spectral Singularities in the Surface Modes of a Spherical Gain Medium
- Impurity invisibility in graphene: Symmetry guidelines for the design of efficient sensors
- Unidirectional Invisibility and PT-Symmetry with Graphene
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- Lasing with Topological Weyl Semimetal
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- "Striped" Rectangular Rigid Box with Hermitian and non-Hermitian Symmetric Potentials
- Exploring Metamaterial Lasers through Non-Hermitian Scattering Formalism
- Exploring Spectral Singularities in Dirac Semimetals: The Role of Non-Hermitian Physics and Dichroism
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