CAREER: Two-Photon Pumped Lasing Using Semiconductor Nanostructures by Design

职业：设计使用半导体纳米结构的双光子泵浦激光

• 批准号: 0846818
• 负责人: Jian Xu
• 金额: $ 40万
• 依托单位: Pennsylvania State Univ University Park
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-08-01 至 2014-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0846818&HistoricalAwards=false
• 关键词: CAREER; Two; Photon; Pumped; Lasing

"This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5)."The ultimate goal of this research is to lay a solid foundation for the development and application of a new generation of two-photon pumped lasers based on engineered semiconductor nanostructures, whereby the strong electronic and/or optical confinements in nanocrystal quantum dots, nano-rods, wires, and disks will impact the nonlinear coherent upconversion process for greatly enhanced lasing performance.Intellectual Merit:The research project is targeted at developing a new generation of two-photon pumped laser devices based on semiconductor nanostructures, whereby the strong electronic and/or optical confinements in nanocrystal quantum dots, nano-rods/wires, and nanodisks will impact the nonlinear coherent upconversion process for greatly enhanced lasing performance. Particular efforts will be made to (1) understand the mechanism of two-photon absorption-induced stimulated emission in nanoscale semiconductor materials, (2) study the two-photon lasing dynamics (gain, mode, spectral and spatial distribution, threshold behavior, upconversion efficiency, etc) and their relation to the structural parameters of nanoscale semiconductor dots/rods/wires/disks, (3) enhance the upconversion efficiency and optimize the lasing performance by tailoring the multiple variables used in nanostructure design and processing, and (4) identify the key applications of nanostructured two-photon lasers in biomolecular detection, optofluidic lasing, and optical storage.Broader Impacts:Successful implementation of the proposed study will bring fundamental changes to the design and operation of two-photon pumped lasers and expand their applications in wavelength upconversion, on-chip UV lasers, bio/medical sensing and diagnostics, and optical storage. The study will also build on a foundation of nonlinear optical processes and stimulated emission in low-dimension semiconductors. The proposed work will provide focused research and learning experience to undergraduate and graduate students by involvement in experimental laboratory work, and help them to bridge the fundamental nanoscience with the real-world applications of nanotechnology. In addition, The PI will work with the Penn State's Center for Nanotechnology Education and Utilization and contribute to the state-wide education and workforce development program on nanotechnology in Pennsylvania.

这项研究的最终目标是为基于工程半导体纳米结构的新一代双光子泵浦激光器的开发和应用奠定坚实的基础，其中纳米晶体量子点、纳米棒、线和盘中的强电子和/或光学限制将影响非线性相干上转换过程，从而极大地增强激光性能。智力上的优点：该研究项目的目标是开发基于半导体纳米结构的新一代双光子泵浦激光器，从而纳米晶体量子点中的强电子和/或光学限制，纳米棒/线和纳米盘将影响非线性相干上转换过程，从而极大地提高激光性能。将特别努力(1)了解纳米半导体材料中双光子吸收诱导受激发射的机制，(2)研究纳米半导体点/棒/线/盘的双光子激光动力学(增益、模式、光谱和空间分布、阈值行为、上转换效率等)及其与结构参数的关系，(3)通过剪裁用于纳米结构设计和加工的多个变量来提高上转换效率和优化激光性能，以及(4)确定纳米结构双光子激光在生物分子检测、光流控激光、广泛的影响：拟议研究的成功实施将给双光子泵浦激光器的设计和运行带来根本性的变化，并扩大其在波长上转换、片上紫外光激光器、生物/医学传感和诊断以及光存储方面的应用。这项研究还将建立在低维半导体的非线性光学过程和受激发射的基础上。这项拟议的工作将通过参与实验实验室工作，为本科生和研究生提供重点研究和学习经验，并帮助他们在基础纳米科学与纳米技术的现实应用之间架起桥梁。此外，PI将与宾夕法尼亚州纳米技术教育和利用中心合作，并为宾夕法尼亚州全州范围内的纳米技术教育和劳动力发展计划做出贡献。