Affiliation:
1. College of Physics, Donghua University , 201620 Shanghai, People’s Republic of China
Abstract
In this article, we perform a numerical investigation on the polarization of a terahertz wave transmitting through a dust acoustic wave. Assuming a triangular waveform of the particle number density in the dust acoustic wave, the transmission characteristics are calculated using the finite-difference time-domain method. It is shown that dust acoustic waves can function as a polarizer to control the polarization states of the terahertz wave, and the conversion efficiency depends on the parameters of the dust acoustic wave, such as the particle number density and the thickness of particle cloud.
Funder
National Natural Science Foundation of China
Fundamental Research Funds for the Central Universities