Remote ionization by a short pulse laser beam propagating in the atmosphere

Date

2008-07-01

Author

Yedierler, Burak

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Self-focusing of high power, short laser pulses is considered for the purpose of identifying physical parameters that allow a remotely controllable ionization in the atmosphere. The propagation equation including diffraction, group velocity dispersion, Kerr nonlinearity and bound electrons effects is derived. A Lagrange density describing the propagation equation depending on a general pulse amplitude is presented for a propagation regime in the absence of ionization and plasma defocusing. Lagrange equations for beam parameters are determined and solved for a particular ansatz describing a chirped Gaussian beam with a curvature function. It is demonstrated that nonlinear effects not only cause transverse focusing but also temporally enhance the group velocity dispersion. A mutual interrelation between the pulse power, curvature, and chirp parameters is derived explicitly. Moreover, the location where the pulse self-focuses is addressed within the limits on the propagation distance along which the beam shape and the initial symmetry are preserved. Thus, a complete analytical structure of remote ionization is underlined. (C) 2008 American Institute of Physics.

Subject Keywords

Condensed Matter Physics

URI

https://hdl.handle.net/11511/38676

Journal

PHYSICS OF PLASMAS

DOI

https://doi.org/10.1063/1.2951998

Collections

Department of Physics, Article

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Citation Formats

B. Yedierler, “Remote ionization by a short pulse laser beam propagating in the atmosphere,” PHYSICS OF PLASMAS, pp. 0–0, 2008, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/38676.