Effective suppression of parametric instabilities with decoupled broadband lasers in plasma
Effective suppression of parametric instabilities with decoupled broadband lasers in plasma
复制标题
利用解耦宽带激光器有效抑制等离子体中的参数不稳定性
DOI：
10.1063/1.5003420
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发表时间：
2017-08
影响因子：
2.2
通讯作者：
Zhang Jie
中科院分区：
文献类型：
--
作者：
Zhao Yao;Weng Suming;Chen Min;Zheng Jun;Zhuo Hongbin;Ren Chuang;Sheng Zhengming;Zhang Jie
对具有一定频差的两束激光驱动下的受激拉曼散射（SRS）不稳定性进行了理论分析。结果表明，只有当两束光对应的不稳定区在波数空间重叠时，才会发生强耦合和受激喇曼散射增强。因此，一个阈值的光束频率差的去耦被发现作为其强度和等离子体密度的函数。在此基础上，提出了一种利用宽带激光器（DBLs）去耦合抑制SRS不稳定性的方法。DBL可以由数十个甚至数百个子束组成，其中子束均匀地分布在宽频谱范围内，例如超过中心频率的10%。由于有限的子光束能量和相邻子光束之间合适的频率差，子光束之间存在解耦现象。粒子模拟表明，SRS可以几乎完全抑制DBLs在1015 W/cm 2的激光强度。此外，S...
A theoretical analysis for the stimulated Raman scattering (SRS) instability driven by two laser beams with a certain frequency difference is presented. It is found that strong coupling and enhanced SRS take place only when the unstable regions corresponding to the two beams are overlapped in the wavenumber space. Hence, a threshold of the beam frequency difference for their decoupling is found as a function of their intensity and plasma density. Based upon this, a strategy to suppress the SRS instability with decoupled broadband lasers (DBLs) is proposed. A DBL can be composed of tens or even hundreds of beamlets, where the beamlets are distributed uniformly in a broad spectrum range such as over 10% of the central frequency. Decoupling among the beamlets is found due to the limited beamlet energy and suitable frequency difference between neighboring beamlets. Particle-in-cell simulations demonstrate that SRS can be almost completely suppressed with DBLs at the laser intensity of ∼1015 W/cm2. Moreover, s...
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影响因子：
8.6
作者：
V. Smalyuk;D. Shvarts;R. Betti;J. Delettrez;D. Edgell;V. Glebov;V. Goncharov;R. Mccrory;D. Meyerhofer;P. Radha;S. Regan;T. Sangster;W. Seka;S. Skupsky;C. Stoeckl;B. Yaakobi;J. Frenje;Chikang Li;R. Petrasso;R. Petrasso;F. Séguin
通讯作者：
V. Smalyuk;D. Shvarts;R. Betti;J. Delettrez;D. Edgell;V. Glebov;V. Goncharov;R. Mccrory;D. Meyerhofer;P. Radha;S. Regan;T. Sangster;W. Seka;S. Skupsky;C. Stoeckl;B. Yaakobi;J. Frenje;Chikang Li;R. Petrasso;R. Petrasso;F. Séguin
影响因子：
2.2
作者：
Lindl, John;Landen, Otto;Baxamusa, S. H.
通讯作者：
Baxamusa, S. H.
相对论电子温度对低密等离子体强激光传播参数不稳定性的影响
影响因子：
2.2
作者：
Zhao Yao;Zheng Jun;Chen Min;Yu Lu-Le;Weng Su-Ming;Ren Chuang;Liu Chuan-Sheng;Sheng Zheng-Ming
通讯作者：
Sheng Zheng-Ming
影响因子：
2.2
作者：
R. Town;D. Bradley;A. Kritcher;O. Jones;J. R. Rygg;R. Tommasini;M. Barrios;L. Benedetti;L. B. Hopki
通讯作者：
R. Town;D. Bradley;A. Kritcher;O. Jones;J. R. Rygg;R. Tommasini;M. Barrios;L. Benedetti;L. B. Hopki
影响因子：
2.2
作者：
I. Igumenshchev;W. Seka;D. Edgell;D. T. Michel;D. Froula;V. Goncharov;R. Craxton;L. Divol;R. Ep
通讯作者：
I. Igumenshchev;W. Seka;D. Edgell;D. T. Michel;D. Froula;V. Goncharov;R. Craxton;L. Divol;R. Ep