光强对短脉冲在准周期光学超晶格中传输的影响
Ultrashort pulse propagating in Fibonacci optical superlattice influenced by input intensity
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摘要: 在考虑自相位调制和高阶群速色散的情况下，分析了超短脉冲在准周期Fibonacci超晶格中传输时，入射光强对脉冲传输特性的影响。结果表明：入射光强度对脉冲传输特性影响很大，不但使频谱展宽，而且限制超晶格的有效长度，是超短脉冲进行频率转换的主要考虑因素之一。
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关键词:
- 相位调制 /
- 群速色散 /
- 准周期Fibonacci光学超晶格 /
- 入射光强度
Abstract: In this paper, taking into account both the selfphasemodulation (SPM) and the lowest and second order group velocity dispersion (GVD), the propagation equations of ultrashort pulses is given through numerical analysis. The influence of input intensity on ultrashort pulses in Fibonacci superlattice is analyzed. The calculations show that the input intensity cause broadening in the spectrum and set a limit to effective length of superlattice, which is an important factor for frequency conversion. -
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