Terahertz devices, nonlinear optics and applications (1)

[ALPS13-03] Observation of carrier accumulation effects with terahertz wave in a GaAs/AlAs multiple quantum well towards ultrafast optical switch applications

*Osamu Kojima¹, Ayumu Takamatsu¹ (1. Chiba Institute of Technology)

We report the terahertz absorption spectra under the continuous-wave laser-excitation in a slightly strained quantum well. It was an advantage for the ultrafast-optical-switch application that the remarkable increase of the absorption was not observed.