This chapter aims to serve as an overview of the basic technology and experimental techniques that the work presented in later chapters of this thesis expands on and develops. Section 2.1 will introduce and provide background to the main methods of generating broadband pulses of THz radiation used throughout this thesis, while Sect. 2.2 will describe the detection of these THz pulses. Section 2.3 will then describe how these two aspects are brought together to create a spectrometer, and describe the process of performing a typical THz-TDS experiment. Finally, Sect. 2.4 will outline the process by which material properties are extracted from the experimental data.