School of Chemical, Biological, and Environmental Engineering, Oregon State University, Corvallis, Oregon 97331.
Biointerphases. 2022 May 4;17(3):031201. doi: 10.1116/6.0001844.
Vibrational sum-frequency generation (VSFG) spectroscopy is a method capable of measuring chemical structure and dynamics within the interfacial region between two bulk phases. At the core of every experimental system is a laser source that influences the experimental capabilities of the VSFG spectrometer. In this article, we discuss the differences between VSFG spectrometers built with picosecond and broadband laser sources as it will impact everything from material costs, experimental build time, experimental capabilities, and more. A focus is placed on the accessibility of the two different SFG systems to newcomers in the SFG field and provides a resource for laboratories considering incorporating VSFG spectroscopy into their research programs. This Tutorial provides a model decision tree to aid newcomers when determining whether the picosecond or femtosecond laser system is sufficient for their research program and navigates through it for a few specific scenarios.
振动和频产生（VSFG）光谱学是一种能够测量两个体相之间界面区域内化学结构和动力学的方法。在每个实验系统的核心是一个激光源，它影响 VSFG 光谱仪的实验能力。在本文中，我们讨论了使用皮秒和宽带激光源构建的 VSFG 光谱仪之间的差异，因为这将影响从材料成本、实验构建时间、实验能力等各个方面。重点介绍了两种不同 SFG 系统对 SFG 领域新手的可及性，并为考虑将 VSFG 光谱学纳入其研究计划的实验室提供了资源。本教程提供了一个模型决策树，以帮助新手确定皮秒或飞秒激光系统是否足以满足他们的研究计划，并为几个特定场景提供了导航。
