Terahertz generation in multiple laser-induced air plasmas

Meng Ku Chen, Jae Hun Kim, Chia En Yang, Stuart Shizhuo Yin, Rongqing Hui, Paul Ruffin

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    An investigation of the terahertz wave generation in multiple laser-induced air plasmas is presented. First, it is demonstrated that the intensity of the terahertz wave increases as the number of air plasmas increases. Second, the physical mechanism of this enhancement effect of the terahertz generation is studied by quantitatively measuring the intensity of the generated terahertz wave as a function of phase difference between adjacent air plasmas. It is found out that the superposition is the main mechanism to cause this enhancement. Thus, the results obtained in this paper not only provide a technique to generate stronger terahertz wave but also enable a better understanding of the mechanism of the terahertz generation in air plasma.

    Original languageEnglish (US)
    Article number231102
    JournalApplied Physics Letters
    Issue number23
    Publication statusPublished - Dec 19 2008


    All Science Journal Classification (ASJC) codes

    • Physics and Astronomy (miscellaneous)

    Cite this

    Chen, M. K., Kim, J. H., Yang, C. E., Yin, S. S., Hui, R., & Ruffin, P. (2008). Terahertz generation in multiple laser-induced air plasmas. Applied Physics Letters, 93(23), [231102]. https://doi.org/10.1063/1.3046122