激光等离子体的受激Brillouin散射

摘要: 研究了激光等离子体背向和侧向受激Brillouin散射光谱结构。激光等离子体相互作用时，受激Brillouin散射光谱受激光等离子体状态的影响而产生Doppler效应。当激光以45° 入射不同材料的平面靶时，等离子体运动产生不同的二维效应，高Z材料产生的等离子体冕区主要沿靶法向运动，受激Brillouin散射光谱在侧向产生较大蓝移，而低Z材料则主要在激光入射方向产生较大蓝移。

Abstract: Stimulated Brillouin Scattering(SBS) spectra are reported from different angle in plasma produced by 0.351m m laser. SBS spectra are affected by 2-D plasma. When laser irradiates disk target at 45° , backscattering is more blue shift in low Z plasma, but sidescattering are more blue shift in high Z plasma.