Details

Autor(en) / Beteiligte

• Zhao, Ji
• Zhang, Liang-Liang
• Luo, Yi-Man
• Wu, Tong
• Zhang, Cun-Lin
• Zhao, Yue-Jin

Titel

Power dependence of terahertz carrier frequency in a plasma-based two-color generation process

Ist Teil von

• Chinese physics B, 2014-12, Vol.23 (12), p.127201-1-127201-4

Erscheinungsjahr

2014

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• We conduct a frequency spectrum experiment to investigate terahertz (THz) emissions from laser-induced air plasma under different laser incident powers. The frequency spectra are measured using both air-biased-coherent detection and a Michelson interferometer. The red-shift of the THz pulse carrier frequency is observed as a response to increased pump power. These phenomena are related to plasma collisions and can be explained by the plasma collision model. Based on these findings, it is apparent that the tuning of the THz carrier frequency can be achieved through regulation of the pump beam.