Applications of Terahertz Spectroscopy: From Carrier Relaxation to Electronic Transport

One of the most important aspects of contemporary semiconductor physics is an understanding of charge conduction process. Terahertz (THz) spectroscopy provides a non-contact electrical probe, thus circumvents many constraints of conventional electrical measurement techniques. In this light, I will discuss two exemplary applications of THz spectroscopy:
1. Dirac Fermion dynamics in graphene
2. Electronic transport dynamics in quantum cascade lasers

The THz research field spans disciplines as diverse as physics, chemistry, biology, materials science and electrical engineering. In order to nucleate a multidisciplinary research direction, I propose to consider the following issues:
1. Development of ultrabroadband THz system
2. Spatially-resolved THz spectroscopy system