GOALI: High-Power Optical Materials for Micro- and Nanofabrication

GOALI：用于微纳加工的高功率光学材料

• 批准号: 0114017
• 负责人: Wei Kong
• 金额: $ 30万
• 依托单位: Oregon State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-09-01 至 2005-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0114017&HistoricalAwards=false
• 关键词: GOALI; Power; Optical; Materials; Micro

The purpose of this project is to advance our understanding of the properties that limit both high-power and short-wavelength operation of laser and nonlinear optical (NLO) crystals. In addition, new and improved materials will be developed. At present, lack of a suitable combination of high birefringence and high transparency in NLO materials is limiting direct second-harmonic conversion to deep UV and VUV wavelengths. In the future, nonlinear absorption and thermal properties are likely to become limiting factors for performance at very high-power levels. To study and address these materials issues, the optical and thermal properties of several wide bandgap oxides will be examined. Linear optical properties, thermal conductivity, and thermo-optic coefficients will be studied for high-transparency nonlinear optical crystals that will allow either direct second-harmonic conversion to wavelengths shorter than 200 nm or frequency mixing for generation of tunable VUV light.The production of high powers in solid-state lasers is largely a thermal-management issue. Substantial improvements in solid-state laser output powers and efficiencies are certainly attainable by incorporating the small energy-defect emission of Yb3+ in a very high thermal-conductivity host. To achieve this combination of properties, several new materials that are rich in Y203 and BeO will be studied and developed. Detailed spectroscopic examinations will be made on the emitting Yb3+ ion; large single crystals will be grown; thermal conductivities will be assessed; and laser properties will be established.The effects of the proposed program extend well beyond optical science and engineering, as the work has direct relevance to manufacturing and micromachining of most of the high-technology devices that are currently being produced in the electronics and telecommunications industries. Moreover, in the future, such laser systems will play important roles in connecting pico-, nano-, meso-, and microscale functions to our everyday world through the fabrication of microelectromechanical devices (MEMs,) microelectrochemical systems (MECs,) and other small photonic and biodevices.The proposed project is also important for the development of human resources in science and engineering; the area is growing rapidly and experienced scientists and engineers are needed. The program involves an international collection of researchers from a variety of disciplines in both academia and industry. Graduate and undergraduate students will be exposed to many different areas of the materials and laser sciences, providing unique research and education opportunities.

该项目的目的是加深我们对限制激光和非线性光学（NLO）晶体高功率和短波长操作的特性的理解。此外，还将开发新的和改进的材料。目前，非线性光学材料中缺乏高双折射和高透明度的适当组合，限制了直接二次谐波转换到深紫外和真空紫外波长。未来，非线性吸收和热特性可能会成为极高功率水平下性能的限制因素。为了研究和解决这些材料问题，将检查几种宽带隙氧化物的光学和热性能。将研究高透明度非线性光学晶体的线性光学特性、热导率和热光系数，该晶体将允许直接二次谐波转换为短于 200 nm 的波长，或进行混频以产生可调谐 VUV 光。固态激光器中高功率的产生在很大程度上是一个热管理问题。通过将 Yb3+ 的小能量缺陷发射纳入非常高的热导率主体中，无疑可以实现固态激光器输出功率和效率的实质性改进。为了实现这种性能组合，将研究和开发几种富含Y2O3和BeO的新材料。将对发射的 Yb3+ 离子进行详细的光谱检查；将生长出大的单晶；将评估热导率；该计划的影响远远超出了光学科学和工程的范围，因为这项工作与目前电子和电信行业生产的大多数高科技设备的制造和微加工直接相关。此外，未来，此类激光系统将通过制造微机电器件（MEM）、微电化学系统（MEC）和其他小型光子和生物器件，在将皮、纳米、介观和微米尺度功能与我们的日常生活连接起来方面发挥重要作用。该项目对于科学和工程方面的人力资源开发也很重要；该领域正在迅速发展，需要经验丰富的科学家和工程师。该计划涉及来自学术界和工业界各个学科的国际研究人员。研究生和本科生将接触材料和激光科学的许多不同领域，提供独特的研究和教育机会。