Title :
Nonlinear response of topological insulators in the terahertz regime
Author :
Chen, Qinjun ; Wang, Xiaolin ; Lewis, R.A. ; Zhang, Chao
Author_Institution :
Inst. for Supercond. & Electron. Mater., Univ. of Wollongong, Wollongong, NSW, Australia
Abstract :
We report that the surface states of Bi2Se3 exhibit strong nonlinear optical responses in the terahertz regime. The third order nonlinear optical conductance can be observed by applying a moderate electric field. The thermal influence on nonlinear optical responses of the surface states of Bi2Se3 is also studied over different temperature and frequency ranges.
Keywords :
bismuth compounds; optical conductivity; topological insulators; Bi2Se3; electric field; nonlinear optical responses; terahertz regime; thermal influence; third order nonlinear optical conductance; topological insulators; Educational institutions; Electric fields; Frequency dependence; Nonlinear optics; Optical films; Photonics;
Conference_Titel :
Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2012 37th International Conference on
Conference_Location :
Wollongong, NSW
Print_ISBN :
978-1-4673-1598-2
Electronic_ISBN :
2162-2027
DOI :
10.1109/IRMMW-THz.2012.6380345
