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推导出飞秒激光啁啾脉冲放大系统中使用的折叠反射式望远镜对脉冲波前的影响. 分析和计 算了波前倾斜与反射式望远镜参数之间的关系.结果发现:当脉冲宽度小于100 fs时,波前 倾斜对光束质量的影响不可忽略,并提出了抑制这种脉冲波前倾斜的有效方法.
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关键词:
- 飞秒激光啁啾脉冲放大 /
- 波前倾斜 /
- 反射式望远镜
The model of the pulse front tilted by a folded reflecting telescope used as a beam expander in the chirped pulse amplification system is developed, and the relationship between the pulse front aberrance and the parameters of the telesco pe is discussed. It is found that the effect of pulse front aberrance on the bea m is too strong to be ignored when the pulse duration is less than 100fs. An e ffective method is presented to overcome this problem.-
Keywords:
- chirp pulse amplification /
- pulse front tilted /
- reflecting telescop e
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