Amplification of an ultra short pulse laser by stimulated Raman scattering of a 1ns pulse in a low density plasma

Journal Article · Mon Oct 08 00:00:00 EDT 2007 · Physics of Plasmas

OSTI ID:943823

Kirkwood, R K; Dewald, E; Niemann, C; Meezan, N; Wilks, S C; Price, D W; Landen, O L; Wurtele, J; Charman, A E; Lindberg, R; Fisch, N J; Malkin, V M; Valeo, E O

Experiments are described in which a 1mJ, 1ps, 1200 nm seed laser beam is amplified by interaction with an intersecting 350 J, 1ns, 1054 nm pump beam in a low density (1 x 10{sup 19}/cm{sup 3}) plasma. The transmission of the seed beam is observed to be enhanced by > {approx} 25 x when the plasma is near the resonant density for stimulated Raman scattering (SRS), compared to measured transmissions at wavelengths just below the resonant value. The amplification is observed to increase rapidly with increases in both pump intensity and plasma density.

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 943823
• Report Number(s): UCRL-JRNL-235750; PHPAEN; TRN: US0900464
• Journal Information: Physics of Plasmas, Vol. 14, Issue 11; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION
42 ENGINEERING
AMPLIFICATION
LASERS
PLASMA
PLASMA DENSITY
SCATTERING
SEEDS
WAVELENGTHS