论文标题
单像素摄像头配置中的时空斑点图案的荧光寿命成像
Fluorescence lifetime imaging via spatio-temporal speckle patterns in single-pixel camera configuration
论文作者
论文摘要
光致量（PL）光谱法提供了在纳秒时间尺度上绘制PL衰减的出色方法。但是，在微秒时间尺度上捕获发射动力学的地图可能是高度耗时的。我们提出了一种新的荧光寿命成像Flim的方法，该方法结合了随机时间斑点激发（大鼠）的概念以及基于空间斑点的单像素摄像机的概念。时空斑点模式使得可以以无与伦比的简单性来映射PL动力学。此外，该方法可以在几分钟内获取在微秒时间尺度中映射PL衰变所需的所有数据。我们提供了两个样品的原理测量证明，并将重建衰减与非成像测量值进行比较。最后，我们讨论了预处理程序和其他因素对重建噪声水平的影响。提出的方法适用于几个样品中的寿命成像过程，包括钙钛矿中的电荷载体动力学或监测PL寿命长的固态发光体。
Photoluminesce (PL) spectroscopy offers excellent methods for mapping the PL decay on the nanosecond time scale. However, capturing maps of emission dynamics on the microsecond time scale can be highly time-consuming. We present a new approach to fluorescence lifetime imaging FLIM, which combines the concept of random temporal speckles excitation (RATS) with the concept of a single-pixel camera based on spatial speckles. The spatio-temporal speckle pattern makes it possible to map PL dynamics with unmatched simplicity. Moreover, the method can acquire all data necessary to map PL decays in the microsecond timescale within minutes. We present proof of principle measurements for two samples and compare the reconstructed decays to the non-imaging measurements. Finally, we discuss the effect of the preprocessing routine and other factors on the reconstruction noise level. The presented method is suitable for lifetime imaging processes in several samples, including charge carrier dynamics in perovskites or monitoring solid-state luminophores with a long lifetime of PL.
