POWRE: Evaluation of AgGaS2 and AgGaSe2 as Laser Active Materials

POWRE：AgGaS2 和 AgGaSe2 作为激光活性材料的评估

• 批准号: 9973866
• 负责人: Mary Ellen Zvanut
• 金额: $ 7.21万
• 依托单位: University of Alabama at Birmingham
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-06-01 至 2001-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9973866&HistoricalAwards=false
• 关键词: POWRE; Evaluation; AgGaS2; AgGaSe2; Laser

The goal of this project is to identify point defects and impurities in ternary chalcopyrites such as AgGaS2 and AgGaSe2. These materials are promising nonlinear optical (NLO) crystals for laser radiation frequency up- or down- conversion in the middle infrared (2-20 um) spectral region. The approach is based on the use of electron paramagnetic resonance (EPR) spectroscopy. The focus is on crystals doped with Cr for the purpose of making a laser active medium suitable for the mid-IR. The lasers that presently serve this range demand careful crystal alignment and have other sensitive operation requirements. The doped chalcopyrite-based lasers are expected to be comparatively simple to operate. Such systems are important for scientific studies of a variety of molecular species and for commercial or military applications requiring atmospheric transparency. %%% This is a research enhancement grant made under the Professional Opportunities for Women in Research and Education (POWRE) program. The research will contribute basic materials science knowledge relevant to the understanding and development of photonic materials for advanced technological applications. The interdisciplinary project involves collaborations across physics and materials science, and also places emphasis on the integration of research and education by incorporating graduate and undergraduate student participation into research related to classroom activities. The project is co-supported by the Division of Materials Research, and the MPS OMA(Office of Multidisciplinary Activities). ***

本项目的目标是确定AgGaS2和AgGaSe2等三元黄铜矿中的点缺陷和杂质。这些材料是一种很有前途的非线性光学(NLO)晶体，可用于中红外(2-20微米)波段激光辐射频率的上转换或下转换。该方法是基于电子顺磁共振(EPR)光谱的使用。重点研究了掺铬晶体，使之成为一种适用于中红外的激光激活介质。目前服务于这一范围的激光器需要仔细的晶体对准，并有其他敏感的操作要求。掺杂的黄铜矿基激光器有望操作相对简单。这类系统对于各种分子物种的科学研究以及需要大气透明度的商业或军事应用都很重要。%这是根据妇女在研究和教育中的职业机会(POWRE)计划提供的研究增强补助金。这项研究将有助于理解和开发用于先进技术应用的光子材料的相关基础材料科学知识。这个跨学科的项目涉及物理和材料科学领域的合作，还强调通过将研究生和本科生的参与纳入与课堂活动相关的研究，从而将研究和教育结合起来。该项目由材料研究司和MPS OMA(多学科活动办公室)共同支持。***