"Reducing the dimensionality of a material from 3D to 2D introduces new quantum effects that can be exploited to see new physics and produce new devices. Two ex

In this thesis, I describe work aimed at understanding nonlinear material responses initiated by strong terahertz (THz) field excitation. I discuss two aspects

Terahertz (THz) radiation with frequencies between 100 GHz and 30 THz has developed into an important tool of science and technology, with numerous applications

Englische Version: This thesis exploits techniques of terahertz (THz) spectroscopy to investigate nonlinear low-frequency excitations of condensed matter. In pa

This book presents an overview of the most recent advances in nonlinear science. It provides a unified view of nonlinear properties in many different systems an