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

doi:10.1088/1674-1056/23/12/127201

›› 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

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

赵骥^a, 张亮亮^b, 骆怡蔓^b, 吴同^b, 张存林^b, 赵跃进^a

a Beijing Key Laboratory for Precision Optoelectronic Measurement Instrument and Technology, School of Optoelectronics, Beijing Institute of Technology, Beijing 100081, China;
b Beijing Key Laboratory for Terahertz Spectroscopy and Imaging, Key Laboratory of Terahertz Optoelectronics, Ministry of Education, Capital Normal University, Beijing 100048, China

收稿日期:2014-05-13 修回日期:2014-07-12 出版日期:2014-12-15 发布日期:2014-12-15
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 61377109 and 11374007) and the Support Program for Outstanding Ph. D. Advisors, China (Grant No. YB20101000701).

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

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

a Beijing Key Laboratory for Precision Optoelectronic Measurement Instrument and Technology, School of Optoelectronics, Beijing Institute of Technology, Beijing 100081, China;
b Beijing Key Laboratory for Terahertz Spectroscopy and Imaging, Key Laboratory of Terahertz Optoelectronics, Ministry of Education, Capital Normal University, Beijing 100048, China

Received:2014-05-13 Revised:2014-07-12 Online:2014-12-15 Published:2014-12-15
Contact: Zhao Yue-Jin E-mail:yjzhao@bit.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 61377109 and 11374007) and the Support Program for Outstanding Ph. D. Advisors, China (Grant No. YB20101000701).

摘要/Abstract

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.

关键词: terahertz frequency, red-shift, plasma collision

Abstract: 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.

Key words: terahertz frequency, red-shift, plasma collision

中图分类号: (High-frequency effects; plasma effects)

72.30.+q

42.65.Tg (Optical solitons; nonlinear guided waves)

赵骥, 张亮亮, 骆怡蔓, 吴同, 张存林, 赵跃进. Power dependence of terahertz carrier frequency in a plasma-based two-color generation process[J]. , 2014, 23(12): 127201-127201.

Zhao Ji (赵骥), Zhang Liang-Liang (张亮亮), Luo Yi-Man (骆怡蔓), Wu Tong (吴同), Zhang Cun-Lin (张存林), Zhao Yue-Jin (赵跃进). Power dependence of terahertz carrier frequency in a plasma-based two-color generation process[J]. Chin. Phys. B, 2014, 23(12): 127201-127201.

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

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

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