Filamentation in low pressure conditions.

Peña, Jessica; Reyes, Danielle; Richardson, Martin

Peña, Jessica; Reyes, Danielle; Richardson, Martin.

Afiliación

Peña J; Laser Plasma Laboratory, Townes Laser Institute, College of Optics and Photonics, Center for Directed Energy, University of Central Florida, Orlando, FL, 32816, USA.
Reyes D; Laser Plasma Laboratory, Townes Laser Institute, College of Optics and Photonics, Center for Directed Energy, University of Central Florida, Orlando, FL, 32816, USA.
Richardson M; Physics Department, University of Central Florida, Orlando, FL, 32816, USA.

Sci Rep ; 12(1): 21365, 2022 Dec 09.

Article en En | MEDLINE | ID: mdl-36494395

RESUMEN

Filamentation is favorable for many long-range outdoor laser applications, some of which require propagation to or at high altitudes. Understanding how the filamentation process and filament properties are impacted by the low pressure conditions present at high altitudes is essential in designing effective applications. The scaling of filament preconditions with pressure is considered. An increase in critical power and decrease in transition numerical aperture (NA) is predicted to occur with a drop in pressure, indicating that nonlinear pulse propagation and filamentation at high altitudes requires higher energy and a longer assisted focal length than sea level filamentation. A summary of pressure-scaled filament properties is also presented. New simulations demonstrate filamentation at pressures as low as 0.0035 atm (38.5 km altitude) is possible.

Asunto(s)

Rayos Láser; Luz

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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Rayos Láser / Luz Idioma: En Revista: Sci Rep Año: 2022 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Reino Unido

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