We show that a thin film of a three-dimensional topological insulator such as Bi2Se3 or Bi2Te3 can exhibit strong linear and nonlinear magneto-optical effects in a transverse magnetic field. In particular, one can achieve an almost complete circular polarization of an incident terahertz or mid-infrared radiation and an efficient four-wave mixing.
@article{arxiv.1411.1430,
title = {Strong magneto-optical effects due to surface states in three-dimensional topological insulators},
author = {Xianghan Yao and Mikhail Tokman and Alexey Belyanin},
journal= {arXiv preprint arXiv:1411.1430},
year = {2015}
}