Broadband coherent perfect absorber with PT-symmetric 2D-materials
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Dosyalar
Tarih
2019
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Academic Press Inc Elsevier Science
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
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. (C) 2019 Elsevier Inc. All rights reserved.
Açıklama
Sarisaman, Mustafa/0000-0002-7148-0836; Tas, Murat/0000-0002-4735-9585
Anahtar Kelimeler
Coherent Perfect Absorption, Spectral Singularity, PT Symmetry, Graphene, Weyl Semimetal, 2D Material
Kaynak
Annals of Physics
WoS Q Değeri
Q2
Scopus Q Değeri
Q2
Cilt
401
