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首页> 外文期刊>Plasma physics and controlled fusion >The control of laser-plasma parametric instabilities and the temperature of suprathermal electrons with ultrabroad bandwidth frequency modulated laser pulse
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The control of laser-plasma parametric instabilities and the temperature of suprathermal electrons with ultrabroad bandwidth frequency modulated laser pulse

机译：超宽带调频激光脉冲对激光等离子体参数不稳定性和超热电子温度的控制

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The development of the capability of selectively exciting or suppressing a specific laser-plasma parametric instability will result in a better understanding on the rich interplay between laser-plasma instabilities, nonlinear wave collapse and strong turbulence; it is also very important to inertial confinement fusion target designs and other advanced applications. The progress in the development of ultraintense, ultrashort pulse lasers has allowed for the exploration of many new regimes in the field of laser-plasma interaction. In this paper, one of the possible applications of the ultrabroad bandwidth associated with these ultrashort laser pulses were explored. The behaviour of ultrabroad bandwidth frequency modulated (UBFM) laser excited simulated Raman scattering (SRS) was studied using a 1 1/2D electromagnetic particle-in-cell code. The results show that, according to the properties of parametric instability, one can already either enhance or reduce the intensity of selected instability for various applications by a readily available UBFM laser pulse. [References: 28]
机译：选择性激发或抑制特定的激光等离子参量不稳定性的能力的发展将使人们更好地理解激光-等离子不稳定性，非线性波塌陷和强湍流之间的相互作用。对于惯性约束聚变目标设计和其他高级应用而言，这也非常重要。超高强度，超短脉冲激光器的发展进展使得人们可以探索激光-等离子体相互作用领域中的许多新领域。在本文中，探索了与这些超短激光脉冲相关的超宽带带宽的可能应用之一。使用1 1 / 2D电磁粒子编码，研究了超宽带调频（UBFM）激光激发的模拟拉曼散射（SRS）的行为。结果表明，根据参数不稳定性的特性，已经可以通过易于使用的UBFM激光脉冲来增强或减少针对各种应用选择的不稳定性的强度。 [参考：28]

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