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Construction of the Apparatus for Two Dimensional Electronic Spectroscopy and Characterization of the Instrument
Shuai Yue,Zhuan Wang,Xiao-chuan He,Gang-bei Zhu,Yu-xiang Weng*
Author NameAffiliationE-mail
Shuai Yue Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China  
Zhuan Wang Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China  
Xiao-chuan He Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China  
Gang-bei Zhu Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China  
Yu-xiang Weng* Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China yxweng@aphy.iphy.ac.cn 
Abstract:
This work describes the construction of a phase-stable two dimensional electronic spectrometer operating in a photon echo mode with optical heterodyne detection, where the diffractive optics were used to realize the passive phase stabilization. In addition, a high speed and sensitive EMCCD was configured for shot-to-shot measurement which effectively improved signal-to-noise ratio. Consequently, the phase stability between a pulse pair split by the diffractive optics was determined in terms of standard deviation to be λ/200 during an observation period of 30 min, while the phase stability of the photon echo signal measured with IR140 is λ/90 in 19 min. In addition, a method of phase-shift in the pump pulse is also presented, which can effectively remove the interference from scattering light in collection of pump-probe transient absorption spectrum. The phase-shift method can improve the accuracy of phase adjustment in 2D electronic spectrum of scattering samples.
Key words:  Two-dimensional electronic spectroscopy, Phase stability, Phase adjustment
FundProject:
二维电子光谱仪器研制与指标分析
岳帅,王专,何小川,朱刚贝,翁羽翔*
摘要:
介绍了一种利用光栅分光,光子回波矩阵构型的二维光谱实验装置.利用快速,高灵敏度的EMCCD对信号进行外差单脉冲测量.并对仪器的指标进行了检测,30 min内12路相干光的相位抖动均方差达到λ/200,19 min内染料IR140溶液外差回波信号的稳定性达到λ/90,通过移动平移台测量了仪器的光谱准确性,相移偏差均方差为λ/90,对平移台移动不均匀导致的光谱失真进行了数值模拟.另外在位相调整时为解决样品泵浦探测信号有干涉的问题,提出了相位移动的方法.将散射信号扣除,大大提高了位相调整的准确性.对染料IR144溶液,光合蛋白色素复合体B820的测量与文献一致.
关键词:  二维光谱,相位稳定,位相调整
DOI:10.1063/1674-0068/28/cjcp1506136
分类号: