CAREER: Evaluation of Cr(2+) Doped Cadmium Chalcogenides as Mid-Infrared Laser Materials

这个CAREER项目旨在全面研究中红外波段可调谐固体激光器中掺杂铬的II-VI半导体。材料的合成将与美国Brimrose公司的研究人员进行持续的合作。材料将通过光谱发光研究、发光激发和衰减时间测量、光吸收和温度范围15 - 450 K的激光性能研究来进行光学表征。光谱结果将在晶体场理论的框架内建模，以获得晶体场强参数，电子-声子耦合强度和发光猝灭活化能。建模结果将用于推导结构/性能关系，这可以指导所选材料的优化，以获得更好的激光性能。教学内容包括：光谱学的新课程和高级研究生实验室的新实验；以及从K-12到研究生阶段增加学生参与研究的活动。该项目旨在增加光电子重要领域的熟练劳动力，特别强调提高代表性不足的学生的参与。该项目涉及具有高技术相关性的材料科学主题领域的研究和教育问题。本研究将为光子材料的研究提供基础的材料科学知识。该计划的一个重要特点是强调教育，并通过在基础和技术上重要的研究领域培训学生，特别强调代表性不足的学生的参与，将研究和教育结合起来。＊＊＊

9733062 Hommerich This CAREER project aims at a comprehensive investigation of chromium doped II-VI semiconductors for tunable solid-state laser applications in the mid-infrared wavelength region. Synthesis of materials will be carried out in an ongoing collaboration with researchers at Brimrose Corporation of America. Materials will be optically characterized by spectral luminescence studies, luminescence excitation and decay time measurements, optical absorption, and laser performance studies over the temperature range 15 - 450 K. Spectroscopic results will be modeled within the framework of crystal field theory to derive crystal field strength parameters, electron-phonon coupling strengths, and luminescence quenching activation energies. The results of the modeling will be used to derive structure/property relations which can guide the optimization of selected materials to achieve better laser performance. Educational components include: a new course in optical spectroscopy and new experiments for an advanced graduate laboratory; and activities to increase student participation in research from K-12 through the graduate level. This project aims to increase the skilled work force in an important field of optoelectronics with a special emphasis on enhancing the participation of underrepresented students. %%% The project addresses research and education issues in a topical area of materials science having high technological relevance. The research will contribute basic materials science knowledge at a fundamental level to photonic materials. An important feature of the program is the emphasis on education, and on the integration of research and education through the training of students in a fundamentally and technologically significant research area with a special emphasis on participation of underrepresented students. ***