DIRECT ELECTRICAL MODULATION OF LIGHT EMISSION AT SUB-LIFETIME SCALES

该计划的目标是开发一种新的高速磷光器件的体系结构，基于对亚寿命速度下的光发射的动态控制。光发射的直接亚寿命调制有望使紧凑型、高速磷光器件的开发成为可能。这些设备将对通信、显示和照明技术以及在生物和化学传感方面的应用产生革命性的影响。教育方面包括开发一门强调动态和可重构光学系统设计的实验室密集型光子学课程；为罗德岛的研究人员、学生和教师开发一个新的高级光谱研讨会；扩大Searchlight项目，以帮助促进工程实验室新的设计研讨会Maker空间，特别是培训和支持当地社区成员。其智力意义集中在研究一种新的方法来调制缓慢衰减的发射器，这些发射器是许多现代光电设备的基础。目标不是调制激发态布居，而是改变局部光学环境，并在激发态寿命内直接将发射率调制为不同的模式。该方法包括一个程序，用于演示一种基于1550 nm电信波长附近的Erb发射的亚寿命调制的电调制发光器件。此外，还将研究一种利用过渡金属荧光粉的电子和振动发射进行高速调制的新材料平台。本课程将加强对发光材料和相变材料的动态过程的理解。

The objective of this program is to develop a new architecture for high-speed phosphorescent devices based on the dynamic control of light emission at sub-lifetime speeds. Direct, sub-lifetime modulation of light emission promises to enable the development of compact, high-speed phosphorescent devices. Such devices would have a transformative impact on communication, display, and lighting technologies as well as applications in biological and chemical sensing. The educational aspects include development of a laboratory-intensive Photonics course that will emphasize the design of dynamic and reconfigurable optical systems; development of a new Advanced Spectroscopy Workshop for researchers, students, and teachers in Rhode Island; expansion of the SearchLight Project to help promote the new Design Workshop maker space in the Laboratory for Engineering, especially to train and support local community members.The intellectual significance is centered on the investigation of a new method for modulating the slowly decaying emitters that form the basis for many modern optoelectronic devices. Rather than modulating the excited state population, the goal is to modify the local optical environment and directly modulate emission rates into different modes within the excited state lifetime. The approach involves a program to demonstrate an electrically-modulated light emitting device based upon the sub-lifetime modulation of erbium emission near the telecom-wavelength of 1550 nm. In addition, a new material platform for high-speed modulation based on leveraging the electronic and vibronic emission from transition-metal phosphors will be investigated. This program will enhance the understanding of dynamic processes in both light emitting and phase change materials.