\Whispering-Gallery Microlaser Using Semiconductor Nanoparticles

回廊微激光器使用半导体纳米颗粒

• 批准号: 0601362
• 负责人: Albert Rosenberger
• 金额: --
• 依托单位: Oklahoma State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-06-01 至 2010-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0601362&HistoricalAwards=false
• 关键词: Whispering; Gallery; Microlaser; Using; Semiconductor

ECS-0601362Whispering-Gallery Microlaser Using Semiconductor NanoparticlesAlbert T. Rosenberger, Donna K. Bandy, Bret N. FlandersDepartment of Physics, Oklahoma State UniversityIntellectual Merit: This project investigates ultralow-threshold lasing of individual fused-silica microspheres coated with semiconductor quantum dots. The pump laser input and the microlaser emission are coupled in and out of the microsphere's whispering-gallery modes by tapered optical fibers. The objectives are to: (1) advance the understanding of microlaser operation, through studies of the origin of such low thresholds; (2) extend the range and controllability of microlaser operation - for example, increasing the 1240-1780-nm lasing wavelength range observed with HgTe and HgCdTe by varying the size and composition of the nanoparticles (also using PbSe and PbS); (3) further develop dielectrophoretic methods for controlled coating of microresonators with nanoparticles; and (4) demonstrate practical application of these microlasers - for example, the sensing of atmospheric trace gases such as methane or carbon monoxide. Three exciting new areas of research are resonant optical enhancement in microspheres; efficient optical emission from semiconductor nanoparticles; and directed assembly of nanoparticles into structures using dielectrophoresis. This work will advance fundamental research by facilitating studies of cavity quantum electrodynamics using quantum dots and whispering-gallery modes.Broader Impacts: This work will strengthen ties with the Oklahoma Network for Nanostructured Materials (NanoNet). The University's multidisciplinary Photonics degree program will also benefit from this project. Both the NanoNet and the Photonics program recruit students from underrepresented groups, and the PIs will encourage the participation of undergraduates. One co-PI and one graduate student are members of underrepresented groups. The graduate students involved will learn fundamental techniques as well as marketable skills. They will also be directly involved in dissemination of research results through conference presentations and journal publications. In addition to their fundamental interest, the microlasers also have numerous potential applications. The PI has a License Agreement with Nomadics, Inc., which is interested in developing commercial products based on the microlasers.

ECS-0601362使用半导体纳米器件的语料库微激光器阿尔伯特·T·罗森伯格，唐娜·K·班迪，布雷特·N·弗兰克斯俄克拉荷马州立大学物理系智力优势：该项目研究覆盖有半导体量子点的单个熔融二氧化硅微球的超低阈值激光。泵浦激光输入和微激光发射通过锥形光纤耦合进入和离开微球的回音廊模式。其目标是：(1)通过研究这种低阈值的起源，提高对微激光操作的理解；(2)扩大微激光操作的范围和可控性--例如，通过改变纳米粒子的尺寸和组成(也使用PbSe和PbS)来增加用HgTe和HgCdTe观察到的1240-1780 nm的激光波长范围；(3)进一步开发用纳米粒子控制微谐振器涂层的介电泳法；以及(4)展示这些微激光的实际应用--例如对大气中痕量气体如甲烷或一氧化碳的传感。三个令人兴奋的新研究领域是微球的共振光学增强；半导体纳米颗粒的高效光发射；以及利用介电泳将纳米颗粒定向组装成结构。这项工作将通过促进使用量子点和耳语画廊模式的腔量子电动力学研究来促进基础研究。广泛的影响：这项工作将加强与俄克拉荷马州纳米结构材料网络(NanoNet)的联系。该大学的多学科光子学学位项目也将从该项目中受益。纳米网络和光子学计划都从代表性不足的群体中招收学生，而PI将鼓励本科生参与。一名合作者和一名研究生是代表人数不足的群体的成员。参与的研究生将学习基本技术和市场技能。他们还将通过会议报告和期刊出版物直接参与研究成果的传播。除了它们的基本利益外，微激光还具有许多潜在的应用。PI与Nomadics，Inc.签订了一项许可协议，Nomadics，Inc.有兴趣开发基于微激光的商业产品。