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提出了一种新型的由熔石英棒和石英光纤组成的复合型相位共轭镜,其可运用于高重复频率激光输入系统中以改善光束质量.该复合相位共轭镜具有较高的受激布里渊散射反射率和受激布里渊散射损伤阈值以及较低的受激布里渊散射阈值等优点.实验中,在100Hz重复频率下,最大获得了42.05%的受激布里渊散射反射率.根据实验条件,由耦合波方程及边界条件得到的物理模型,经数值求解后得到的结果和实验符合较好.且由理论结果提出了一种提高该复合型相位共轭镜工作状态的有效方法.
A new type of composite phase conjugate mirror consisting of fused quartz rod and quartz fiber is proposed to improve the beam quality in a high repetition rate laser input system.The conjugate phase conjugate mirror has a high stimulated Brillouin scattering reflectivity and stimulated Brillouin scattering damage threshold and lower stimulated Brillouin scattering threshold etc .. In the experiment, under the 100Hz repetition frequency, the maximum obtained 42.05% stimulated Brillouin scattering Reflectance.According to the experimental conditions, the physical model obtained from the coupled wave equation and the boundary conditions is in good agreement with the experimental results.An improved theoretical model is proposed to improve the working state of the conjugate phase conjugator Effective method.