Complete elimination of pump scattering in transient absorption spectroscopy using phase and amplitude modulation

被引：1

作者：

Yue, Jianing ^{[1
,2
]}

Zhou, Liang ^{[1
,2
]}

Su, Peiyuan ^{[1
,2
]}

Tian, Lie ^{[1
,2
]}

Ran, Guangliu ^{[1
,2
]}

Zhang, Wenkai ^{[1
,2
]}

机构：

[1] Beijing Normal Univ, Ctr Adv Quantum Studies, Dept Phys, Beijing 100875, Peoples R China

[2] Beijing Normal Univ, Ctr Adv Quantum Studies, Appl Opt Beijing Area Major Lab, Beijing 100875, Peoples R China

来源：

CHEMICAL PHYSICS | 2023年 / 568卷

基金：

中国国家自然科学基金;

关键词：

Transient absorption spectroscopy; Pump scattering; Scattering elimination; Phase cycling; Chopper; PROBE; NOISE; LIGHT; STATE;

D O I：

10.1016/j.chemphys.2023.111846

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Transient absorption (TA) spectroscopy is a powerful technique for studying ultrafast processes in physics, chemistry, biology, and materials. It is challenging to obtain high-quality TA spectra when there is severe light scattering in the sample. We propose an experimental approach to completely remove all noise caused by pump scattering in TA spectra using phase and amplitude modulation. We demonstrate through theoretical analysis and experiments that this method can remove the additive noise and convolution noise, all the noise in TA caused by pump scattering.

引用

页数：5

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