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Terahertz generation in multiple laser-induced air plasmas
Chen, Meng-Ku Kim, Jae Hun Yang, Chia-En Yin, Stuart Shizhuo Hui, Rongqing Ruffin, Paul
Chen, Meng-Ku
Kim, Jae Hun
Yang, Chia-En
Yin, Stuart Shizhuo
Hui, Rongqing
Ruffin, Paul
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Abstract
An investigation of the terahertz wavegeneration 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.
Description
This is the published version. Copyright 2008 American Institute of Physics
Date
2008
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Publisher
American Institute of Physics
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Keywords
Plasma waves, Terahertz radiation, Signal generators, Mirrors, Second harmonic generation
Citation
Chen, Meng-Ku, Jae Hun Kim, Chia-En Yang, Stuart Shizhuo Yin, Rongqing Hui, and Paul Ruffin. "Terahertz Generation in Multiple Laser-induced Air Plasmas." Appl. Phys. Lett. Applied Physics Letters 93.23 (2008): 231102. http://dx.doi.org/10.1063/1.3046122