Acquisition of Optical Parametric Oscillator, Monochromator and Multiscaler for Research and Student Training

罗彻斯特大学光学研究所正在建设一个激发光谱实验室，用于研究利用纳米工程光学材料的新光源。光学参数振荡器、单色仪和多标尺将用于四个研究项目和两个本科生/研究生培训实验室。能量传递将用激发光谱来研究，以完善激光速率方程模型，并有助于确定稀土掺杂纳米玻璃的最佳基质组成和掺杂水平。在相关的教学实验练习中，学生们将观察到掺Yb玻璃中的合作发光，就像目前光学放大器研究中所采用的那样。在另一个项目中，辐射杂质复合体将被引入绝缘体上硅(SOI)结构中，该结构通过纳米结构表面表现出增强的吸收/发射。激发光谱将被用来阐明确定杂化SOI结构中发射截面的微观过程。光致发光(PL)光谱将用于探索同位素纯晶硅中的声子模控制。新的实验室将允许激发高空间密度的间接激子，这可能导致相干声子发射。还将研究分子束外延(MBE)生长过程中通过原位激光图案化制备的III-V族量子点。共振激发将被用来探测尺寸分布非常窄的量子点，并可能表明使用统一特征集合最终可能实现的极限。在一个相关的实验中，本科生将研究具有不同带隙(Si或GaAs，GaP，GaN或钻石)的大块晶体以及在我们的MBE实验室生长的量子井和点群III-V半导体的吸收光谱。优等生还将被鼓励在大四期间使用新实验室进行独立项目。*罗切斯特大学光学研究所，授予光学科学和工程学士、硕士和博士学位，正在建设一个新的光学光谱学实验室，用于研究和培训。重点介绍利用纳米(十亿分之一米)尺度特征的新型光学材料。与这项研究密切相关的新培训练习将提供给本科生大四学生和一年级研究生。将使用可调谐光源和相关检测设备来探测微观成分与其辐射效率之间的关系。包括生物医学研究和电信在内的许多应用领域的材料知识和设计都有望得到改进。然而，这个新实验室的首要目标是揭示新的(或仅仅是有用的)光学材料的表征和工艺参数中的基本关系和隐藏的联系。%

0076322Houde-WalterThe Institute of Optics at the University of Rochester is building an excitation spectroscopy laboratory for research in new optical sources utilizing nano-engineered optical materials. An optical parametric oscillator, monochromator and multiscaler will be used in four research programs and two undergraduate/graduate training labs. Energy transfer will be studied using excitation spectroscopy to refine laser rate equation models and help to determine the best host composition and doping levels in rare-earth doped nano-glasses. In a related teaching lab exercise, students will observe cooperative luminescence in Yb-doped glasses, as is currently practiced in optical amplifier research. In another project, radiative impurity complexes will be introduced into silicon-on-insulator (SOI) structures that exhibit enhanced absorption/emission via nanostructured surfaces. Excitation spectroscopy will be used to elucidate the microscopic processes that determine emission cross sections in the hybridized SOI structures. Photoluminescence (PL) spectroscopy will be used to explore phonon mode control in isotopically pure crystalline Si. The new lab will permit the excitation of high spatial densities of indirect excitons, which may result in coherent phonon emission. Group III-V quantum dots, as made by in-situ laser patterning during molecular-beam epitaxial (MBE) growth, will also be investigated. Resonant excitation will be used to probe quantum dots of very narrow size distributions and may indicate the limit of what might be eventually achieved with an ensemble of uniform features. In a related lab, undergraduate students will investigate the absorption spectra of bulk crystals with various bandgaps (Si or GaAs, GaP, and GaN or diamond) as well as quantum well and dot group III-V semiconductors grown in our MBE lab. Honors students will also be encouraged to use the new lab for independent projects during their senior year.***The Institute of Optics at the University of Rochester, which grants Bachelors, Masters and doctoral degrees in Optical Science and Engineering, is building a new optical spectroscopy lab for research and training. New optical materials that utilize features on the nanometer (one billionth ofa meter) scale, will be emphasized. New training exercises that are closely related to this research will be offered to both undergraduate seniors and first-year graduate students. A tunable source and associated detection equipment will be used to probe the relationships between the microscopic components and their radiative efficiency. Improved knowledge and design of materials for many applications, including biomedical research and telecommunications, are expected. However, the overarching goal of this new laboratory is to reveal fundamental relations and elucidate hidden connections in the characterization and process parameters of new (or just useful) optical materials.%%%