RUI: Depth-Resolved Photoluminescence Imaging for Optical Characterization of Semiconductor Heterostructures

小行星9803189 该RUI项目旨在开发一种装置，以在液态He温度下对半导体进行深度分辨和横向空间分辨光致发光（PL），并让本科生参与实验研究。这是通过构造用于氦浴低温恒温器的插入件来实现的，该插入件消除了浸没的束路径和光学器件的困难，同时通过使用机械简单和热鲁棒的平移机构来提供约1微米的横向分辨率。深度分辨率将通过使用不同的激发波长来实现。在光谱色散之后，光致发光信号将用液氮冷却的锗光电二极管检测。该系统的完成和利用为学生提供了机会，获得机械，热，光学设计和施工，计算机接口，实验设计，收集和解释基础研究数据的经验。 该项目主要针对具有高技术相关性的材料科学专题领域的基础研究问题的本科生的介绍和培训。 该研究将有助于基本的材料科学知识和初级教育的好处，本科生在电子/光子材料性能的基本方面。 该计划的一个重要特点是通过在基础和技术重要领域培养本科生来整合研究和教育。 ***

9803189 Behringer This RUI project aims to develop an apparatus to perform depthresolved and laterally spatially-resolved photoluminescence(PL) on semiconductors at liquid He temperature, and to involve undergraduates in experimental research. This is to be achieved by constructing an insert for a helium bath cryostat that eliminates difficulties of immersed beam paths and optics while providing a lateral resolution of approximately one micrometer by using mechanically simple and thermally robust translation mechanisms. The depth resolution will be achieved by using different excitation wavelengths. After spectral dispersion, the photoluminescence signal will be detected with a liquid nitrogen cooled germanium photodiode. The completion and utilization of this system provides opportunities for students to gain experience in mechanical, thermal, and optical design and construction, computer interfacing, experimental design, and collection and interpretation of basic research data. %%% The project primarily addresses the introduction and training of undergraduate students in basic research issues in a topical area of materials science having high technological relevance. The research will contribute basic materials science knowledge and primary educational benefits to undergraduates in fundamental aspects of electronic/photonic materials properties. An important feature of the program is the integration of research and education through the training of undergraduate students in a fundamentally and technologically significant area. ***