TITLE

Terahertz generation in multiple laser-induced air plasmas

AUTHOR(S)
Meng-Ku Chen; Jae Hun Kim; Chia-En Yang; Stuart Shizhuo Yin; Hui, Rongqing; Ruffin, Paul
PUB. DATE
December 2008
SOURCE
Applied Physics Letters;12/8/2008, Vol. 93 Issue 23, p231102
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
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.
ACCESSION #
35886571

 

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