Publication: Intense terahertz-pulse generation by four-wave mixing process in induced gas plasma
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Issued Date
2015
Resource Type
File Type
application/pdf
ISSN
0277786X
Other identifier(s)
2-s2.0-84951831531
Rights Holder(s)
Scopus
Bibliographic Citation
Proceedings of SPIE - The International Society for Optical Engineering. Vol 9546, (2015)
Suggested Citation
Wicharn S., Buranasiri P. Intense terahertz-pulse generation by four-wave mixing process in induced gas plasma. Proceedings of SPIE - The International Society for Optical Engineering. Vol 9546, (2015). doi:10.1117/12.2186931 Retrieved from: https://hdl.handle.net/20.500.14740/6251
Author(s)
Abstract
In this article, we have numerically investigated an intense terahertz (THz) pulses generation in gaseous plasma based on the third-order nonlinear effect, four-wave mixing rectification (FWMR). We have proposed that the fundamental fields and second-harmonic field of ultra-short pulse lasers are combined and focused into a very small gas chamber to induce a gaseous plasma, which intense THz pulse is produced. To understand the THz generation process, the first-order multiple-scale perturbation method (MSPM) has been utilized to derive a set of nonlinear coupled-mode equations for interacting fields such as two fundamental fields, a second-harmonic field, and a THz field. Then, we have simulate the intense THz-pulse generation by using split step-beam propagation method (SS-BPM) and calculated output THz intensities. Finally, the output THz intensities generated from induced air, nitrogen, and argon plasma have been compared. © 2015 SPIE.
Subject(s)
Beam propagation method
Crack propagation
Four wave mixing
Harmonic analysis
Nitrogen plasma
Nonlinear equations
Nonlinear optics
Perturbation techniques
Terahertz waves
Ultrashort pulses
Four-wave-mixing process
Gaseous plasmas
Multiple-scale perturbation
Nonlinear coupled-mode equations
Terahertz generation
Terahertz pulse generation
Third-order nonlinear effect
Ultra-short pulse laser
Pulse generators
Crack propagation
Four wave mixing
Harmonic analysis
Nitrogen plasma
Nonlinear equations
Nonlinear optics
Perturbation techniques
Terahertz waves
Ultrashort pulses
Four-wave-mixing process
Gaseous plasmas
Multiple-scale perturbation
Nonlinear coupled-mode equations
Terahertz generation
Terahertz pulse generation
Third-order nonlinear effect
Ultra-short pulse laser
Pulse generators