Curvature aided long range propagation of short laser pulses in the atmosphere

Date

2013-3

Author

Yedierler, Burak

Metadata

Show full item record

Item Usage Stats

142
views

0
downloads

The pre-filamentation regime of propagation of a short and intense laser pulse in the atmosphere is considered. Spatiotemporal self-focusing dynamics of the laser beam are investigated by calculating the coupled differential equations for spot size, pulse length, phase, curvature, and chirp functions of a Gaussian laser pulse via a variational technique. The effect of initial curvature parameter on the propagation of the laser pulse is taken into consideration. A method relying on the adjustment of the initial curvature parameter can expand the filamentation distance of a laser beam of given power and chirp is proposed.

Subject Keywords

Chirped optical pulses, Variational approach, Ultra-short, Filamentation, Dynamics, Media, Collapse, Distance, Ionization, Mechanisms

URI

https://hdl.handle.net/11511/28445

Journal

Physics of Plasmas

DOI

https://doi.org/10.1063/1.4795305

Collections

Department of Physics, Article

Suggestions

OpenMETU
Core

Nonlinear longitudinal compression of short laser pulses in the atmosphere Yedierler, Burak (AIP Publishing, 2009-05-01) Propagation of short and intense laser beams in the atmosphere is considered for the purpose of identifying the temporal compression. The conditions and validity of linear and nonlinear compression theories are discussed. The effects of chirping and pulse power in the preionization regime are deliberated. The fact that the linear theory cannot explain the pulse compression in the atmosphere is presented.
Remote ionization by a short pulse laser beam propagating in the atmosphere Yedierler, Burak (AIP Publishing, 2008-07-01) 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 equation...
Modelling of a continuous optical discharge stabilized by a gas flow in quasi-optical approximation Rafatov, İsmail; Yedierler, Burak (IOP Publishing, 2009-03-07) We consider a continuous optical discharge (COD) sustained by a weakly focused CO(2) laser beam and stabilized by a cold gas flow incident in the direction of the laser radiation propagation. We develop and examine a two-dimensional radiative gas-dynamic model for COD which uses realistic quasi-optics and takes refraction of the laser radiation in the plasma properly into account in describing the laser beam propagation. The model is applied to calculate the parameters of COD in the air flow as functions of...
Wakefield generation in one-dimensional LWFA Vanchinkhuu, J; Bilikmen, S (2001-06-01) The generation of wakefields in near-critical density plasma by a short laser pulse is considered. The equations describing the plasma response to the acting laser pulse and the Hamiltonian of an electron in the wakefield are derived by using the Hamilton-Jacobi equation for the cases of nu (g) similar or equal to nu (p) similar or equal to w = c w < c (e is the speed of light). The equations are solved analytically in two cases for a square-shaped laser pulse. The plasma potential inside the laser pulse an...
Optimization of a microbolometer pixel for operation in the sub-1 THz region Demirörs, Oytun; Atik, Bahar; Dirican, Emrah; Altan, Hakan; Esentürk, Okan; Ylldlrlm, Mustafa; Akın, Tayfun (2021-01-01) Imaging in the Terahertz (THz) region has drawn attention in recent years, but the nature of the THz frequency regime causes some drawbacks in imaging such as long wavelength, high cost, and low emission levels at room temperature. Because of the high atmospheric absorption of THz waves, fabrication of a microbolometer pixel that works in the sub-1 THz frequency regime is necessary. Large pixel pitches due to longer wavelengths and the resulting higher thermal mass pose a difficult challenge. Due to those l...

Citation Formats

B. Yedierler, “Curvature aided long range propagation of short laser pulses in the atmosphere,” Physics of Plasmas, 2013, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/28445.