Ultrafast hydrogen bond dynamics of liquid water revealed by terahertz-induced transient birefringence

摘要

a Schematic diagram of the experimental system. A broadband THz pump pulse excites liquid water to initiate transient birefringence, which is monitored by an 800nm probe pulse that becomes elliptically polarized as it passes through the water film. b THz-induced Kerr effects in water with THz pump pulses of different peak electric field strengths. The inset shows the THz electric field strength dependence of the TKE response