Accession Number:

ADA280405

Title:

Propagation of Radius-Tailored Laser Pulses Over Extended Distances in a Uniform Plasma

Descriptive Note:

Interim rept.

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC

Personal Author(s):

• Krall, J.
• Esarey, E.
• Sprangle, P.
• Joyce, G.

Report Date:

1994-05-18

Pagination or Media Count:

25.0

Abstract:

A Maxwell-fluid model is described, which allows simulation of laser pulses over extended distances multiple diffraction lengths in an underdense plasma. This model is used to simulate radius-tailored laser pulses, which can propagate over such distances with minimal distortion in a uniform plasma. Theoretical model equations governing the choice of radius tailoring are also given. A radius-tailored pulse has constant power approximately equal to the critical power for relativistic guiding over the length of the pulse and a spot size at focus that varies over the length of the pulse. A laser pulse configuration of this type can be constructed from a series of ultra-short Gaussian pulses. Laser-plasma, Particle acceleration.

Descriptors:

• *PLASMAS(PHYSICS)
• *LASER BEAMS
• COMPUTERIZED SIMULATION
• SIMULATION
• PULSES
• LIGHT PULSES
• POWER
• SELECTION
• PULSE MODULATION
• PARTICLE ACCELERATORS
• UNIFORMS
• PHASE DISTORTION
• RANGE(DISTANCE)
• CONFIGURATIONS
• DIFFRACTION
• PARTICLES
• PROPAGATION
• ACCELERATION

Subject Categories:

• Lasers and Masers
• Plasma Physics and Magnetohydrodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE