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


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/1028628.pdf


Report Date : 29 Dec 2016


Pagination or Media Count : 22


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 :   longwavelength 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