Single-shot implementation of dispersion-scan for the characterization of ultrashort laser pulses
Single-shot implementation of dispersion-scan for the characterization of ultrashort laser pulses
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DOI：
10.1364/oe.23.032803
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发表时间：
2015-12-14
期刊：
影响因子：
3.8
通讯作者：
Crespo, H.
中科院分区：
文献类型：
--
作者：
Fabris, D.;Holgado, W.;Crespo, H.
我们展示了一种基于色散扫描（d-scan）技术的单次超快速诊断。在这个实现中，不像在扫描d扫描中那样平移楔形来改变色散，要测量的脉冲在棱镜中经历空间变化的色散量。然后将产生的光束成像为二次谐波产生晶体，并使用成像光谱仪测量二维迹线，使用d扫描检索算法对其进行分析。我们将单次实现与扫描d扫描进行比较，用于测量来自空心芯光纤脉冲压缩机的低于3.5 fs的脉冲。我们表明，用于提取脉冲幅度和相位的检索算法提供了类似的结果，证明了新的单次实现在近单周期状态下的有效性。(C)2015美国光学学会
We demonstrate a single-shot ultrafast diagnostic, based on the dispersion-scan (d-scan) technique. In this implementation, rather than translating wedges to vary the dispersion as in scanning d-scan, the pulse to be measured experiences a spatially varying amount of dispersion in a prism. The resulting beam is then imaged into a second-harmonic generation crystal and an imaging spectrometer is used to measure the two-dimensional trace, which is analyzed using the d-scan retrieval algorithm. We compare the single-shot implementation with the scanning d-scan for the measurement of sub-3.5-fs pulses from a hollow core fiber pulse compressor. We show that the retrieval algorithm used to extract amplitude and phase of the pulse provides comparable results, proving the validity of the new single-shot implementation in the near single-cycle regime. (C)2015 Optical Society of America