飞秒时间分辨实验中泵浦-探测交叉相关函数的测量和时间零点的确定

布玛丽亚·阿布力米提; 向梅

doi:10.3788/fgxb20173805.0648

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飞秒时间分辨实验中泵浦-探测交叉相关函数的测量和时间零点的确定

器件制备及器件物理 | 更新时间：2020-08-12

- 飞秒时间分辨实验中泵浦-探测交叉相关函数的测量和时间零点的确定
- Determine The Pump-probe Cross Correlation Function and The Zero of Time of The Pump and Probe Laser in Femtosecond Time-resolved Studies
- 发光学报 2017年38卷第5期页码：648-654
- 作者机构：
  
  1. 新疆师范大学物理与电子工程学院, 新疆乌鲁木齐 830054
  2. 中国科学院武汉物理与数学研究所波谱与原子分子物理国家重点实验室,湖北武汉,430071
- 作者简介：
- 基金信息：
  
  国家自然科学基金（11564040，11204264）;新疆自治区青年科技创新人才培养工程（2013731012）;新疆师范大学重点实验室招标课题（KWFG1502）资助项目
- DOI：10.3788/fgxb20173805.0648
  中图分类号： O64
- 纸质出版日期：2017-5-5，
  
  收稿日期：2016-11-7，
  
  修回日期：2017-1-19，
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布玛丽亚·阿布力米提, 向梅. 飞秒时间分辨实验中泵浦-探测交叉相关函数的测量和时间零点的确定[J]. 发光学报, 2017,38(5): 648-654

Bumaliya·ABULIMITI, XIANG Mei. Determine The Pump-probe Cross Correlation Function and The Zero of Time of The Pump and Probe Laser in Femtosecond Time-resolved Studies[J]. Chinese Journal of Luminescence, 2017,38(5): 648-654
布玛丽亚·阿布力米提, 向梅. 飞秒时间分辨实验中泵浦-探测交叉相关函数的测量和时间零点的确定[J]. 发光学报, 2017,38(5): 648-654 DOI： 10.3788/fgxb20173805.0648.

Bumaliya·ABULIMITI, XIANG Mei. Determine The Pump-probe Cross Correlation Function and The Zero of Time of The Pump and Probe Laser in Femtosecond Time-resolved Studies[J]. Chinese Journal of Luminescence, 2017,38(5): 648-654 DOI： 10.3788/fgxb20173805.0648.

摘要

飞秒激光技术的出现使得实时探测与跟踪激发态超快弛豫动力学过程成为可能，并能够给出激发态动力学过程清晰的物理图像。而在飞秒时间分辨实验中，泵浦-探测相关函数和时间零点直接影响实验结果的可靠性和准确性。本文结合飞秒激光在分子激发态超快动力学过程中的应用进展，介绍了根据实验条件和要求，在具体实验过程中泵浦-探测相关函数测量和时间零点确定的几种方法。实验中选择可见光作为泵浦光和探测光时，可以通过测定随泵浦-探测时间延迟变化的泵浦激光与探测激光的和频/差频光强来确定泵浦探测交叉相关函数和时间零点；而选择中心波长在紫外甚至真空紫外的激光脉冲作为泵浦光或探测光时，泵浦-探测交叉相关函数通常采用校正的方法测量。

Abstract

Femtosecond laser technique

not only makes the observation of excited state relaxation processes more directly

but also offers information for disentangle the complex dynamics of excited state relaxation processes. However

what have an explosive impact on accuracy and reliability of experimental result is that cross correlation function as well as the zero of time of the pump and probe laser pulses

therefore

determine the correct value of them is the most vital process in the experiment. Examples of applying the femtosecond pump-probe technique is presented to study the relaxation dynamics of the molecular excited states

by what

on the basis of experimental conditions and requirements

the paper introduced approaches of determine the cross correlation function as well as the zero of time of the pump and probe laser pulse in the course of concrete femtosecond time-resolved experiments. For the pump and the probe laser pulses in the visible light range

by way of delay time of the pump and the probe pulses

we could apply optical technique to detect the transient of the intensity of the second harmonic generation. Yet

for the determination of correlation function as well as the zero of time for the ultrafast pulses in the UV or the VUV

calibration method would be an ideal method.

关键词

飞秒激光泵浦-探测相关函数时间分辨

Keywords

femtosecond laserpump-probecross-correlation functiontime-resolved

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