VIRTUALLY IMAGED PHASE ARRAY FOR HIGH RESOLUTION SPECTROSCOPY

这个子项目是许多研究子项目中利用 资源由NIH/NCRR资助的中心拨款提供。子项目和 调查员(PI)可能从NIH的另一个来源获得了主要资金， 并因此可以在其他清晰的条目中表示。列出的机构是 该中心不一定是调查人员的机构。 虚拟成像相控阵(VIPA)是一种改进的法布里-珀罗标准具，它通过多光束干涉实现光谱角度色散。它由背面涂有部分反射膜、正面覆盖近100%反射膜的熔融石英板和一个窄的减反射涂层窗口组成。当入射光以一定角度进入窗户时，它在VIPA内经历多次反射，产生多个虚像，这些虚像干扰产生高光谱角色散。以这种方式获得的高光谱分辨率允许通过样品内的光声相互作用观察到非常窄的光谱漂移。

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.