Acquisition of a Tunable, 10-fs and 100-fs Laser Spectroscopy System for Chemistry, Biomedical Engineering, Materials Science and Physics

采购用于化学、生物医学工程、材料科学和物理的可调谐 10-fs 和 100-fs 激光光谱系统

• 批准号: 0321171
• 负责人: Norman Tolk
• 金额: $ 40万
• 依托单位: Vanderbilt University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-09-01 至 2005-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0321171&HistoricalAwards=false
• 关键词: Acquisition; Tunable; 10; fs; 100

This grant supports the acquisition of an ultrashort-pulse, broadly tunable laser facility for the study of electron and phonon dynamics in micro- and nanostructured materials. The facility includes a titanium:sapphire oscillator, a regenerative amplifier for the oscillator, and a set of two optical parametric amplifiers that can be used by the oscillator-amplifier combination. The combined laser systems supply multiple streams of intense, coherent pulses over a wavelength range from ultraviolet to mid-infrared, with pulse duration of 100 fs, The unique experiments made accessible by the availability of this ultrafast laboratory will include: studies of electron-electron correlations, femtosecond dynamics of phase transitions, coherent phonon generation, spectral hole burning in nanostructures, optical spectroscopy of photosynthetic processes in biomimetic nanostructures, studies of fast nonradiative processes in semiconductors, and optical coherence tomography with sub-cellular resolution. The initial program involves researchers with substantial research funding carrying out studies on all of these topics. In addition to the co-investigators named in the proposal, scientists and engineers from several other schools and departments at Vanderbilt, Fisk and neighboring undergraduate institutions are expected to use the facility. The project will enhance teaching, training and learning through an associated for-credit, two-week intensive training course in ultrafast spectroscopy taught by the co- investigators and associated post-doctoral scholars. This is necessary for effective use of the facility, but will also serve to enrich our graduate curriculum and provide a venue for recruitment of new users. Participation from underrepresented groups will be enhanced through the participation of faculty and students from Fisk University with whom many of the Vanderbilt co-PIs have established collaborative research arrangements. By making available this unique resource to qualified users, the ultrafast laser facility will significantly enhance the current infrastructure for research in Middle Tennessee. Broad dissemination of the results will be ensured not only through the usual scientific venues (conferences, workshops, seminars and colloquia), but also through Vanderbilt's Internet Webzine, Explorations, which is staffed by full-time professionals from the University's Division of News and Public Affairs. Benefits to society can be expected in fields ranging from biomedical engineering to semiconductor science.

该补助金支持收购超短脉冲，广泛可调谐激光设备，用于研究微结构和纳米结构材料中的电子和声子动力学。该设备包括一个钛：蓝宝石振荡器，再生放大器的振荡器，和一组两个光学参量放大器，可以使用的振荡器放大器组合。组合激光系统提供多个强相干脉冲流，其波长范围从紫外到中红外，脉冲持续时间为100 fs，通过这个超快实验室的可用性可以进行的独特实验将包括：电子-电子相关性的研究，相变的飞秒动力学，相干声子的产生，纳米结构中的光谱烧孔，仿生纳米结构中光合作用过程的光谱学，半导体中快速非辐射过程的研究，以及具有亚细胞分辨率的光学相干断层扫描。最初的计划涉及研究人员与大量的研究资金进行研究，对所有这些主题。 除了提案中提到的合作研究人员外，范德比尔特、菲斯克和邻近本科院校的其他几所学校和部门的科学家和工程师预计也将使用该设施。该项目将通过由共同研究者和相关博士后学者教授的为期两周的超快光谱学强化培训课程来加强教学、培训和学习。这对有效利用该设施是必要的，但也将有助于丰富我们的研究生课程，并为招募新用户提供场所。来自代表性不足的群体的参与将通过来自菲斯克大学的教师和学生的参与得到加强，其中许多范德比尔特的合作PI已经建立了合作研究安排。通过向合格的用户提供这种独特的资源，超快激光设施将显著增强田纳西州中部目前的研究基础设施。将确保不仅通过通常的科学场所（会议、讲习班、研讨会和座谈会），而且通过范德比尔特的因特网杂志《探索》广泛传播研究结果，该杂志由大学新闻和公共事务司的全职专业人员担任工作人员。从生物医学工程到半导体科学等领域都可以预期对社会的好处。