Theory of sonogram characterization of optical pulses
Theory of sonogram characterization of optical pulses
复制标题
光脉冲声波图表征理论
DOI：
10.1109/3.914402
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发表时间：
2001
影响因子：
2.5
通讯作者：
K. Kikuchi
中科院分区：
文献类型：
--
作者：
K. Kikuchi
我们推导了从光脉冲的声像图中恢复光脉冲的幅度和相位的公式。当频率滤波器的传递函数已知时，利用导出的公式，无需迭代计算，即可从声像图中完全反演出脉冲的幅值和相位。根据这个公式，我们发现用于声图互相关测量的采样脉冲的宽度必须比被测脉冲的宽度短得多，并且当我们使用被测脉冲本身作为采样脉冲时，重建脉冲并不一定是可能的。最后，我们讨论了光脉冲声图表征的可能方案。
We derive a formula for retrieving the amplitude and phase of an optical pulse from its sonogram. When the transfer function of the frequency filter is known, the pulse amplitude and phase are completely retrieved from the sonogram without iterative calculations by using the derived formula. Based on this formula, we find that the width of a sampling pulse, which is used for cross-correlation measurement of the sonogram, must be much shorter than the width of the pulse under test, and that it is not necessarily possible to reconstruct the pulse when we use the pulse under test itself as a sampling pulse. Finally, we discuss possible schemes for sonogram characterization of optical pulses.