Phase-modulated rapid-scanning fluorescence-detected two-dimensional electronic spectroscopy
Phase-modulated rapid-scanning fluorescence-detected two-dimensional electronic spectroscopy
复制标题
相位调制快速扫描荧光检测二维电子光谱
DOI：
10.1063/5.0057649
复制
发表时间：
2021-09-07
影响因子：
4.4
通讯作者：
Ogilvie, Jennifer P.
中科院分区：
文献类型：
--
作者：
Agathangelou, Damianos;Javed, Ariba;Ogilvie, Jennifer P.
我们提出了一种荧光检测二维电子光谱的快速扫描方法，该方法将声光相位调制与数字锁定检测相结合。这种方法移动信号检测窗口以抑制 1/f 激光噪声，并实现时间延迟的干涉跟踪，以允许校正光谱相位失真和数据的精确定相。数字锁定检测的使用使得能够在单次测量中采集感兴趣的线性和非线性信号。我们在激光染料上演示了该方法，测量线性荧光激发光谱以及重定相、非重定相和吸收荧光检测的二维电子光谱。
We present a rapid-scanning approach to fluorescence-detected two-dimensional electronic spectroscopy that combines acousto-optic phase-modulation with digital lock-in detection. This approach shifts the signal detection window to suppress 1/f laser noise and enables interferometric tracking of the time delays to allow for correction of spectral phase distortions and accurate phasing of the data. This use of digital lock-in detection enables acquisition of linear and nonlinear signals of interest in a single measurement. We demonstrate the method on a laser dye, measuring the linear fluorescence excitation spectrum as well as rephasing, non-rephasing, and absorptive fluorescence-detected two-dimensional electronic spectra.