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从准周期Fibonacci超晶格的结构特点和超短脉冲的传输特性出发,分析了超短脉冲在Fibonacci超晶格中传输时,自相位调制对脉冲频谱的调制,同时考虑了由SPM造成的频率啁啾对脉冲特性的影响,发现SPM对脉冲特性影响很大,它不但使脉冲频谱展宽,而且限制超晶格的总体长度及基本单元的结构。
Based on the characteristics of the quasi-periodic Fibonacci superlattice and the transmission characteristics of the ultrashort pulse, the modulation of the pulse spectrum by the self-phase modulation when the ultrashort pulse is transmitted in the Fibonacci superlattice is analyzed, taking into account the frequency caused by the SPM Chirp effect on the pulse characteristics and found SPM pulse characteristics of a great influence not only broaden the pulse spectrum, but also limit the overall length of the superlattice and the basic unit structure.