EAGER: Development of parametrically-amplified vibrational sum-frequency generation

在这个由化学结构、机制和动力学项目支持的项目中，马里兰大学的John Fourkas教授和他的研究小组将开发一种称为参数放大振动和频率生成（PAVSFG）的技术，用于研究表面和界面的结构和动力学。PAVSFG是传统和频产生光谱的先进版本，它基于二阶非线性光学（NLO）过程，其中两个低能光子在表面或界面结合产生高能量光子。由于二阶NLO过程的强度非常弱，因此Fourkas实验室开发的参数放大过程将对广泛的表面和界面科学研究产生积极影响，包括生物膜和催化剂表面。该项目还将成为培养前沿光学物理和物理化学方面的学生和博士后研究人员的工具。

In this project supported by the Chemical Structure, Mechanisms and Dynamics Program, Professor John Fourkas of the University of Maryland and his research group will develop a technique called parametrically amplified vibrational sum frequency generation (PAVSFG) for the study of the structure and dynamics of surfaces and interfaces. PAVSFG is an advanced version of conventional sum frequency generation spectroscopy, which is based on a second order nonlinear optical (NLO) process in which two low energy photons combine at a surface or interface to produce a high energy photon. Since second order NLO processes are very weak in intensity, the parametric amplification process developed in the Fourkas lab will have positive consequences for a wide range of surface and interfacial science investigations, including biological membranes and catalyst surfaces. This project will also be the vehicle for training students and post-doctoral researchers in cutting-edge optical physics and physical chemistry.