Integrated spectroscopy system

光致发光和拉曼光谱被广泛用于研究物质的电子结构、化学、物理和光学性质。最近，人们对从几个原子到微米量级的宏观尺度的微小结构产生了浓厚的兴趣。这些长度尺度使得进行光致发光和拉曼光谱具有挑战性。光学和激光的进步已经在很大程度上克服了这一挑战，并且有了称为共聚焦显微镜的专用显微镜，光可以聚焦到非常小的尺寸。然而，不同寻常的是，两种以上的光谱学可以同时定位，使得一种技术的信息与另一种技术收集的信息在空间上重合。该资助描述了如何使用共聚焦显微镜在精确的同一位置收集有关物质的振动特性和有关物质的光致发光特性的信息。为了实现这一目标，需要专门的运动控制平台，在聚焦的激光束下移动样品，其步骤大约是直径几十到几千个原子。有了这些能力，研究人员将能够研究石墨烯（一个原子厚度的二维石墨）的电子特性，DNA与银和金颗粒的相互作用，增强光的光学增强，芯片上的实验室型传感系统，称为量子点的微小半导体结构，量子线和量子井，甚至探索艺术修复的法医学。

Photoluminescence and Raman spectroscopy are widely used to study the electronic structure, chemical, physical and optical properties of matter. Recently, there has been much interest in minute structures that span length scales from that of few numbers of atoms to more macroscopic dimensions on the order of microns. These length scales make it challenging to perform photoluminescence and Raman spectroscopy. Advances in optics and lasers have largely overcome this challenge and with specialized microscopes, called confocal microscopes, light can be focused down to very small dimensions. It is unusual, however, that two ore more kinds of spectroscopy can be co-located so that information from one kind of technique coincides spatially with the information collected with another technique. This grant describes how a confocal microscope can be used to gather information about the vibrational properties of matter and information about the photoluminescent properties of matter at precisely the same location. To accomplish this, specialized motion control stages are required to move a sample around under a focused laser beam in steps that are on the order of tens to several thousands of atoms in diameter. With these capabilities researchers will be able to study the electronic properties of graphene (2-dimensional graphite that is one atom thick), DNA interactions with silver and gold particles that enhance the optical enhancing of light, lab-on-a-chip type sensing systems, minute semiconductor structures called Quantum dots, quantum wires and quantum wells, and even explore the forensics of art restoration.