VIRTUALLY IMAGED PHASE ARRAY FOR HIGH RESOLUTION SPECTROSCOPY

这个子项目是许多研究子项目中的一个 由NIH/NCRR资助的中心赠款提供的资源。子项目和 研究者（PI）可能从另一个NIH来源获得了主要资金， 因此可以在其他CRISP条目中表示。列出的机构是 研究中心，而研究中心不一定是研究者所在的机构。 虚拟成像相控阵（VIPA）是一种改进的法布里-珀罗标准具，通过多光束干涉实现光谱角色散。 它由一个背面涂有部分反射膜、正面涂有几乎100%反射涂层的熔融石英板和一个窄的防反射涂层窗口组成。 当入射光以一定角度进入窗口时，它在VIPA内经历多次反射以创建多个虚像，这些虚像干涉以产生高光谱角色散。 以这种方式实现的高光谱分辨率允许通过样品内的光声相互作用观察非常窄的光谱偏移。

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. The subproject and investigator (PI) may have received primary funding from another NIH source, and thus could be represented in other CRISP entries. The institution listed is for the Center, which is not necessarily the institution for the investigator. A Virtually Imaged Phased Array (VIPA) is a modified Fabry-Perot etalon which achieves spectral angular dispersion via multiple beam interference. It consists of a fused silica plate with the back side coated with partially reflective film and the front side covered with nearly 100% reflective coating, and a narrow anti-reflection coated window. When an incident light enters the window at a certain angle, it undergoes many reflections within the VIPA to create multiple virtual images, which interfere to produce high spectral angular dispersions. The high spectral resolution achieved in such a manner allows the observation of very narrow spectral shifts by opto-acoustic interactions within the sample.