Cross-phase modulation in two-dimensional spectroscopy

被引：1
作者：
Cai, Mao-Rui [1 ]
Zhang, Xue [1 ]
Cheng, Zi-Qian [1 ]
Yan, Teng-Fei [2 ]
Dong, Hui [1 ]
机构：
[1] China Acad Engn Phys, Grad Sch, Beijing 100193, Peoples R China
[2] Shanghai Univ, Sch Microelect, Shanghai 200444, Peoples R China
来源：
OPTICS EXPRESS | 2024年 / 32卷 / 03期
基金：
中国国家自然科学基金;
关键词：
ELECTRONIC SPECTROSCOPY; CHIRP;
D O I：
10.1364/OE.503686
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Developing from transient absorption (TA) spectroscopy, two-dimensional (2D) spectroscopy with pump -probe geometry has emerged as a versatile approach for alleviating the difficulty in implementing 2D spectroscopy with other geometries. However, the presence of cross -phase modulation (XPM) in TA spectroscopy introduces significant spectral distortions, particularly when the pump and probe pulses overlap. We demonstrate that this phenomenon is extended to the 2D spectroscopy with pump -probe geometry and the XPM is induced by the interference of the two pump pulses. We present the oscillatory behavior of XPM in the 2D spectrum and its displacement with respect to the waiting time delay through both experimental measurements and numerical simulations. Additionally, we explore the influence of probe pulse chirp on XPM and discover that by compressing the chirp, the impact of XPM on the desired signal can be reduced. (c) 2024 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement
引用
收藏
页码：2929 / 2941
页数：13
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