MoS2 Broadband Coherent Perfect Absorber for Terahertz Waves

Weiren Zhu, Fajun Xiao, Ming Kang, Debabrata Sikdar, Xianling Liang, Junping Geng, Malin Premaratne, Ronghong Jin

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16 Citations (Scopus)

Abstract

We present a comprehensive analysis of terahertz waves propagation through a bulk MoS2 crystal slab. It is shown that broadband coherent perfect absorption can be achieved and the coherent absorptivity can be adjusted from 1.57% to 99.97% by means of phase modulation. Moreover, the relative bandwidth for over 90% coherent absorptivity can be as wide as 179%. By increasing the doping rate in MoS2 crystal, the coherent absorptivity spectrum exhibits a clear blueshift whilst the peak coherent absorptivity remains over 99.9%. Full-wave numerical simulations are further carried out to confirm the validity of our theoretical analysis.

Original languageEnglish
Article number5502207
Number of pages8
JournalIEEE Photonics Journal
Volume8
Issue number6
DOIs
Publication statusPublished - 1 Dec 2016

Keywords

  • broadband
  • Coherent perfect absorber
  • MoS

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