Characterization of periodic multilayer mirrors optimized for single attosecond pulse reflection
Characterization of periodic multilayer mirrors optimized for single attosecond pulse reflection
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DOI：
10.1016/j.ijleo.2013.01.025
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发表时间：
2013-06
期刊：
影响因子：
3.1
通讯作者：
Chengyou Lin;Shujing Chen;Da-he Liu
中科院分区：
文献类型：
--
作者：
Chengyou Lin;Shujing Chen;Da-he Liu
通过优化吸收层与双层层的厚度比，设计了反射单阿秒脉冲的峰值反射率高、反射频带宽的Mo/Si多层周期性反射镜。对不同厚度比的Mo/Si多层周期性反射镜的频域和时域反射特性进行了分析和比较，以选择最佳的厚度比，实现高效的阿秒脉冲反射。模拟结果表明，不同层数的周期性四分之一波长Mo/Si多层反射镜对入射高斯脉冲的反射能力均优于其他厚度比的多层反射镜。在研究周期性多层反射镜的光谱和时间响应时，我们采用了传递矩阵法和快速傅立叶变换进行了仿真。
Periodic Mo/Si multilayer mirrors with high peak reflectivity and broad reflection band for reflecting single attosecond pulse are designed, by optimizing the thickness ratio between the absorber layer and the bilayer. The reflective characteristics of periodic Mo/Si multilayer mirrors with different thickness ratio are analyzed and compared both in frequency domain and in time domain, for picking out optimized thickness ratio to achieve high-efficiency attosecond pulse reflection. According to our simulation, periodic quarter-wavelength Mo/Si multilayer mirrors with different layers all show better pulse reflection capability for incident Gaussian pulses than multilayers with other thickness ratio. When studying the spectral and the temporal responses of periodic multilayer mirrors, the transfer-matrix method and fast Fourier transform have been used in our simulation.