Evolution of the stimulated Raman scattering instability in two-dimensional particle-in-cell simulations

2010 ◽  
Vol 17 (9) ◽  
pp. 092704 ◽  
Author(s):  
P. E. Masson-Laborde ◽  
W. Rozmus ◽  
Z. Peng ◽  
D. Pesme ◽  
S. Hüller ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Stimulated Raman Scattering ◽  
Two Dimensional ◽  
Particle In Cell ◽  
Stimulated Raman

scholarly journals Stimulated Raman scattering in a non-eigenmode regime

2020 ◽  
Vol 8 ◽  
Author(s):  
Yao Zhao ◽  
Suming Weng ◽  
Zhengming Sheng ◽  
Jianqiang Zhu
Keyword(s):  
Raman Scattering ◽  
Stimulated Raman Scattering ◽  
Laser Energy ◽  
Scattered Light ◽  
Incident Light ◽  
Loss Mechanism ◽  
Constant Frequency ◽  
Electrostatic Wave ◽  
Particle In Cell ◽  
Stimulated Raman

Stimulated Raman scattering (SRS) in plasma in a non-eigenmode regime is studied theoretically and numerically. Different from normal SRS with the eigen electrostatic mode excited, the non-eigenmode SRS is developed at plasma density $n_{e}>0.25n_{c}$ when the laser amplitude is larger than a certain threshold. To satisfy the phase-matching conditions of frequency and wavenumber, the excited electrostatic mode has a constant frequency around half of the incident light frequency $\unicode[STIX]{x1D714}_{0}/2$ , which is no longer the eigenmode of electron plasma wave $\unicode[STIX]{x1D714}_{pe}$ . Both the scattered light and the electrostatic wave are trapped in plasma with their group velocities being zero. Super-hot electrons are produced by the non-eigen electrostatic wave. Our theoretical model is validated by particle-in-cell simulations. The SRS driven in this non-eigenmode regime is an important laser energy loss mechanism in the laser plasma interactions as long as the laser intensity is higher than $10^{15}~\text{W}/\text{cm}^{2}$ .

scholarly journals Investigation of stimulated Raman scattering using a short-pulse diffraction limited laser beam near the instability threshold

2009 ◽  
Vol 27 (1) ◽  
pp. 185-190 ◽  
Author(s):  
J.L. Kline ◽  
D.S. Montgomery ◽  
C. Rousseaux ◽  
S.D. Baton ◽  
V. Tassin ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Laser Plasma ◽  
Stimulated Raman Scattering ◽  
Short Pulse ◽  
Electron Plasma ◽  
Thomson Scattering ◽  
Wave Number ◽  
Particle In Cell ◽  
Laser Facility ◽  
Stimulated Raman

AbstractShort pulse laser plasma interaction experiments using diffraction limited beams provide an excellent platform to investigate the fundamental physics of stimulated Raman scattering. Detailed understanding of these laser plasma instabilities impacts the current inertial confinement fusion ignition designs and could potentially impact fast ignition when higher energy lasers are used with longer pulse durations (>1 kJ and >1 ps). Using short laser pulses, experiments can be modeled over the entire interaction time of the laser using particle-in-cell codes to validate our understanding quantitatively. Experiments have been conducted at the Trident laser facility and the Laboratoire pour l'Utilisation des Lasers Intenses (LULI) to investigate stimulated Raman scattering near the threshold of the instability using 527 nm and 1059 nm laser light, respectively, with 1.5–3.0 ps pulses. In both experiments, the interaction beam was focused into pre-ionized helium gas-jet plasma. Measurements of the reflectivity as a function of intensity and kλD were completed at the Trident laser facility, where k is the electron plasma wave number and λD is the plasma Debye length. At LULI, a 300 fs Thomson scattering probe is used to directly measure the density fluctuations of the driven electron plasma and ion acoustic waves. Work is currently underway comparing the results of the experiments with simulations using the VPIC particle-in-cell code. Details of the experimental results are presented in this manuscript.

Two-dimensional imaging of sprays with fluorescence, lasing, and stimulated Raman scattering

1992 ◽  
Vol 31 (18) ◽  
pp. 3543 ◽  
Author(s):  
Ali Serpengüzel ◽  
J. Christian Swindal ◽  
Richard K. Chang ◽  
William P. Acker
Keyword(s):  
Raman Scattering ◽  
Stimulated Raman Scattering ◽  
Two Dimensional ◽  
Stimulated Raman

Two-dimensional stimulated Raman scattering of short laser pulses

1995 ◽  
Vol 51 (4) ◽  
pp. 3752-3755 ◽  
Author(s):  
C. J. McKinstrie ◽  
R. Betti ◽  
R. E. Giacone ◽  
T. Kolber ◽  
E. J. Turano
Keyword(s):  
Raman Scattering ◽  
Stimulated Raman Scattering ◽  
Laser Pulses ◽  
Two Dimensional ◽  
Short Laser Pulses ◽  
Stimulated Raman

Vibrational Imaging and Quantification of Two-Dimensional Hexagonal Boron Nitride with Stimulated Raman Scattering

ACS Nano ◽  
2019 ◽  
Vol 13 (12) ◽  
pp. 14033-14040 ◽  
Author(s):  
Jiwei Ling ◽  
Xianchong Miao ◽  
Yangye Sun ◽  
Yiqing Feng ◽  
Liwu Zhang ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Raman Scattering ◽  
Stimulated Raman Scattering ◽  
Hexagonal Boron Nitride ◽  
Two Dimensional ◽  
Stimulated Raman

Ultra-violet Stimulated Raman Scattering of SrWO4 Crystal

2009 ◽  
Vol 24 (3) ◽  
pp. 563-566 ◽  
Author(s):  
Zheng-Ping WANG ◽  
Da-Wei HU ◽  
Huai-Jin ZHANG ◽  
Xin-Guang XU ◽  
Ji-Yang WANG ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Stimulated Raman Scattering ◽  
Ultra Violet ◽  
Stimulated Raman

Bulk Laser Damage Threshold and Stimulated Raman Scattering in KTiOPO4 Crystal.

1996 ◽  
Vol 24 (8) ◽  
pp. 906-909
Author(s):  
Akio MIYAMOTO ◽  
Hidetsugu YOSHIDA ◽  
Yusuke MORI ◽  
Takatomo SASAKI ◽  
Sadao NAKAI
Keyword(s):  
Raman Scattering ◽  
Stimulated Raman Scattering ◽  
Damage Threshold ◽  
Laser Damage Threshold ◽  
Laser Damage ◽  
Stimulated Raman
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