Ultrafast Science / 2021 / Article / Fig 7

Review Article

Broadband THz Sources from Gases to Liquids

Figure 7

Normalized THz energy with different optical pulse durations [10]. THz signal generated by water plasma prefers an optical excitation with a longer pulse duration. However, the THz wave generation from air plasma is always in favor of the shortest pulse. The optical pulse energy is 0.4 mJ for both cases.