›› 2014, Vol. 23 ›› Issue (12): 127201-127201.doi: 10.1088/1674-1056/23/12/127201
• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇 下一篇
赵骥a, 张亮亮b, 骆怡蔓b, 吴同b, 张存林b, 赵跃进a
Zhao Ji (赵骥)a, Zhang Liang-Liang (张亮亮)b, Luo Yi-Man (骆怡蔓)b, Wu Tong (吴同)b, Zhang Cun-Lin (张存林)b, Zhao Yue-Jin (赵跃进)a
摘要: 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.
中图分类号: (High-frequency effects; plasma effects)