Аннотация:The following sections are included: Introduction Terahertz Generation in Cryogenic Liquids Experimental Setup with the Free Surface of LN Experimental Setup with Thin LN Jet THz Generation in LN Under Single-Color Excitation Regime THz Generation in LN Under Double-Color Excitation Regime Nonlinear Effects During Propagation of THz Pulse Through LN in the Presence of Laser Pump Radiation Theoretical Models for THz Generation in LN Transient Photocurrent Model Four-Wave Mixing in the Case of Ambipolar Diffusion Summary Terahertz Generation in Liquid Metals Single Liquid Microdroplet as Target for THz Generation Experimental Setup THz Signal Dependence on Excitation Scheme and Laser Pulse Parameters THz Radiation Pattern Numerical Calculations on Media Ionization and Electron Dynamics in the Ionized Near-Surface Region of the Droplet Liquid Metal Jet with Single-Pulse Excitation Summary Perspective on Investigation of New Liquid Media THz Sources References