Abstract
We have observed cyclotron resonance in a high-mobility two-dimensional electron gas by using the techniques of terahertz time-domain spectroscopy combined with magnetic fields. From this, we calculate the real and imaginary parts of the diagonal elements of the magnetoconductivity tensor, which in turn allows us to extract the concentration, effective mass, and scattering time of the electrons in the sample. We demonstrate the utility of ultrafast terahertz spectroscopy, which can recover the true linewidth of cyclotron resonance in a high-mobility sample without being affected by the saturation effect.
© 2007 Optical Society of America
Full Article | PDF ArticleMore Like This
X. Wang, D. J. Hilton, J. L. Reno, D. M. Mittleman, and J. Kono
Opt. Express 18(12) 12354-12361 (2010)
David J. Hilton
Opt. Express 20(28) 29717-29726 (2012)
G. Timothy Noe, Qi Zhang, Joseph Lee, Eiji Kato, Gary L. Woods, Hiroyuki Nojiri, and Junichiro Kono
Appl. Opt. 53(26) 5850-5855 (2014)