Accession Number:

AD1028628

Title:

Backward Raman Amplification in the Long-wavelength Infrared

Descriptive Note:

Technical Report,01 Oct 2015,30 Sep 2016

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC WASHINGTON United States

Personal Author(s):

• Johnson,Luke
• Gordon,Daniel
• Palastro,John
• Hafizi,Bahman

Report Date:

2016-12-29

Pagination or Media Count:

22.0

Abstract:

The wealth of work in backward Raman amplification in plasma has focused on the extreme intensity limit, but backward Raman amplification may also provide an effective and practical mechanism for generating intense, broad bandwidth, long-wavelength infrared radiation. An electromagnetic finite-difference time-domain simulation coupled with a relativistic cold fluid plasma model is used to demonstrate the generation of picosecond pulses at 10 um with terawatt powers through backward Raman amplification. The effects of collisional and Landau damping, pump depletion, and wave breaking are examined.

Descriptors:

• long wavelength infrared radiation
• Electromagnetic pulse simulators
• optics
• backscattering
• plasma waves
• electrons
• collisions

Subject Categories:

• Plasma Physics and Magnetohydrodynamics
• Electromagnetic Pulses

Distribution Statement:

APPROVED FOR PUBLIC RELEASE