INVESTIGATION OF NONLINEAR ABSORPTION OF STRONG ELECTROMAGNETIC WAVE IN TWO - DIMENSIONAL GRAPHENE BY USING QUANTUM KINETIC EQUATION METHOD

  • Nguyen Vu Nhan
  • Tran Anh Tuan
  • Hoang Gia Linh(
  • Nguyen Dinh Nam
  • Nguyen Quang Bau
Keywords: Absorption coefficient, Quantum kinetic equation, 2D Graphene, confined electron, Electron - phonon scattering, Electromagnetic wave

Abstract

Quantum theory of nonlinear absorption of strong electromagnetic wave (EMW) by confined electrons in two - dimensional (2D) graphene without magnetic field has been studied by using the quantum kinetic equation in assumption of electron - optical phonon scattering. The analytic expression of absorption coefficient is obtained in 2D graphene. The results in this case are compared with the case of the bulk semiconductors show the
difference and the novelty of the results. The results numerically calculated and plotted show the dependence of absorption coefficient on the photon energy of the electronmagnetic wave and the temperature of the system in 2D graphene.

điểm /   đánh giá
Published
2022-11-11
Issue
No. 53 (2021)
Section
CONTENTS