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Improved retrieval of complex supercontinuum pulses from XFROG traces using a ptychographic algorithm

机译:借助谱图算法改进了从XFROG迹线检索复杂的超连续谱脉冲的能力

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摘要

We demonstrate that time-domain ptychography, a recently introduced iterative ultrafast pulse retrieval algorithm, has properties well suited for the reconstruction of complex light pulses with large time-bandwidth products from a cross-correlation frequency-resolved optical gating (XFROG) measurement. It achieves temporal resolution on the scale of a single optical cycle using long probe pulses and low sampling rates. In comparison to existing algorithms, ptychography minimizes the data to be recorded and processed, and significantly reduces the computational time of the reconstruction. Experimentally, we measure the temporal waveform of an octave-spanning, 3.5 ps long, supercontinuum pulse generated in photonic crystal fiber, resolving features as short as 5.7 fs with sub-fs resolution and 30 dB dynamic range using 100 fs probe pulses and similarly large delay steps. (C) 2016 Optical Society of America
机译:我们证明时域刻印术是一种最新引入的迭代超快速脉冲检索算法,具有非常适合通过互相关频率分辨光学选通(XFROG)测量来重构具有大时宽乘积的复杂光脉冲的特性。使用长探测脉冲和低采样率,它可以在单个光学周期的范围内实现时间分辨率。与现有算法相比,密码术可以最大程度地减少要记录和处理的数据,并显着减少重建的计算时间。通过实验,我们测量在光子晶体光纤中产生的跨度为3.5 ps的八度音阶的超连续谱脉冲的时间波形,使用100 fs的探测脉冲可分辨出5.7 fs的短分辨率,亚fs的分辨率和30 dB的动态范围。延迟步骤。 (C)2016美国眼镜学会

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