Propagation of terahertz waves in an atmospheric pressure microplasma with Epstein electron density profile

Journal Article · Tue Mar 15 04:00:00 EDT 2011 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.3561834· OSTI ID:21538161

Chengxun, Yuan; Zhongxiang, Zhou; Zhang, Jingwen W; Hongguo, Sun; He, Wang; Yanwei, Du ^[1]; Xiaoli, Xiang ^[2]

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1. Department of Physics, Harbin Institute of Technology, Harbin, China 150001 (China)
2. Shanghai Academy of Spaceflight Technology, Shanghai, China 201108 (China)

Propagation properties of terahertz (THz) waves in a bounded atmospheric-pressure microplasma (AMP) are analyzed in this study. A modified Epstein profile model is used to simulate the electron density distribution caused by the plasma sheaths. By introducing the dielectric constant of a Drude-Lorentz model and using the method of dividing the plasma into a series of subslabs with uniform electron density, the coefficients of power reflection, transmission, and absorption are derived for a bounded microplasma structure. The effects of size of microplasma, electron density profile, and collision frequency on the propagation of THz waves are analyzed numerically. The results indicate that the propagation of THz waves in AMPs depend greatly on the above three parameters. It is demonstrated that the THz wave can play an important role in AMPs diagnostics; meanwhile, the AMP can be used as a novel potential tool to control THz wave propagation.

• OSTI ID: 21538161
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 6 Vol. 109; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABSORPTION
ANIMALS
ARTHROPODS
ATMOSPHERIC PRESSURE
BOLLWORM
BOUNDARY LAYERS
COLLISIONS
DIELECTRIC PROPERTIES
DISTRIBUTION
ELECTRICAL PROPERTIES
ELECTROMAGNETIC RADIATION
ELECTRON DENSITY
EMISSION
FLUORESCENCE
INSECTS
INVERTEBRATES
LARVAE
LAYERS
LEPIDOPTERA
LUMINESCENCE
MOTHS
PERMITTIVITY
PHOTON EMISSION
PHYSICAL PROPERTIES
PLASMA
PLASMA SHEATH
RADIATIONS
REFLECTION
SORPTION
TRANSMISSION
WAVE PROPAGATION