超快瞬态反射显微镜成像技术指标数据集

超快瞬态反射光谱是探究物质表界面超快激发态动力学过程的有力工具。然而，传统的瞬态反射光谱仅具有时间和光谱分辨能力，不具备空间分辨能力和显微成像功能。因此，通过将超快瞬态反射光谱与显微成像技术相结合，我们设计搭建了超快瞬态反射显微动力学成像系统，利用紫外至近红外宽波段泵浦及超连续白光全谱探测，为进一步深入揭示微观精细结构中的超快激发态动力学提供技术支持和实验/理论依据。
在该系统中，我们利用一束单色飞秒脉冲作为泵浦光用于样品激发态产生，同时利用一束飞秒超连续白光作为探测光经振镜偏转逐点扫描样品表面；探测光经样品表面反射后由同一物镜收集，并利用光谱仪同步记录探测光谱的变化值（R/R）；泵浦-探测间的时间延迟由精密光学延迟线控制；为进一步提高成像空间分辨率，显微镜物镜选用油镜。
本数据集主要面向时空分辨光谱及动力学成像研究领域，设计具备超高时空分辨能力的超快瞬态反射显微镜成像系统，记录了在性能指标测试中获得的原始数据和分析数据，数据体量为7.55 MB。

Ultrafast transient reflectance spectroscopy is a powerful tool for investigating ultrafast excited-state dynamics at the surface and interface of materials. However, conventional transient reflectance spectroscopy only possesses temporal and spectral resolution, lacking spatial resolution and microscopic imaging capabilities. Therefore, by integrating ultrafast transient reflectance spectroscopy with microscopic imaging technologies, we designed and constructed an ultrafast transient reflectance microscopic dynamic imaging system. This system uses broadband pump pulses spanning from ultraviolet to near-infrared and full-spectrum detection with femtosecond supercontinuum white light, providing technical support and experimental/theoretical foundations for further in-depth studies of ultrafast excited-state dynamics within microscopic fine structures.

In this system, a monochromatic femtosecond laser pulse is used as the pump beam to generate excited states in the sample, while a femtosecond supercontinuum white light serves as the probe beam, which is deflected by a galvanometer scanner to perform point-by-point scanning over the sample surface. After being reflected from the sample surface, the probe beam is collected by the same objective lens, and a spectrometer synchronously records the spectral variation ΔR/R. The time delay between the pump and probe beams is controlled by a precision optical delay line. To further improve the spatial resolution of imaging, an oil-immersion objective lens is selected for the microscope.

This dataset is primarily targeted at the research field of spatiotemporal-resolved spectroscopy and dynamic imaging. It corresponds to an ultrafast transient reflectance microscopic imaging system with ultra-high spatiotemporal resolution, and records both raw and analyzed data obtained during performance index tests, with a total data volume of 7.55 MB.

搜集汇总

背景与挑战

背景概述

该数据集基于超快瞬态反射光谱与显微成像技术结合的系统，旨在研究物质表界面超快激发态动力学，具备高时空分辨能力。它记录了性能指标测试中的原始和分析数据，数据体量为7.55 MB，由中国科学院大连化学物理研究所相关团队创建。