Coherent perfect absorption, and coherent control of absorption and amplification in optical microstructures with parity-time-reversal symmetry

具有宇称时间反转对称性的光学微结构中的相干完美吸收以及吸收和放大的相干控制

• 批准号: 1068642
• 负责人: Alfred Stone
• 金额: $ 57.21万
• 依托单位: Yale University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-07-01 至 2016-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1068642&HistoricalAwards=false
• 关键词: Coherent; perfect; absorption; coherent; control

Coherent perfect absorption, and coherent control of absorption andamplification in optical microstructures with parity-time-reversal symmetryA. Douglas Stone and Hui Cao - Yale UniversityAbstract: Objective: The objective of this research is to understand theoretically and demonstrate experimentally two types of optical devices based on the recently proposed concept of time-reversed laser action. The approach used is an integrated program of analytic and computational electromagnetic/quantum theory, combined with design, fabrication and measurement of prototype devices illustrating the fundamental physical principles involved. A laser emits coherent electromagnetic radiation with a specific field pattern and frequency from a cavity containing an amplifying gain medium; the "time-reversed" device, a coherent perfect absorber, is a cavity containing a loss medium which will perfectly absorb exactly the pattern of radiation the laser would emit. We explore an even newer device, a cavity containing both a gain and loss medium, capable of both amplifying and attenuating a specific pattern of radiation. Intellectual Merit: While the laser concept and related devices has been studied for over fifty years, the coherent perfect absorber and devices incorporating loss (or balanced loss and gain) have only very recently been proposed and initial experimental realizations are just appearing. Their properties and fundamental limits, particularly on the quantum scale, are not yet understood. The theory suggests a new ability to use interference to control both the absorption and amplification of light. Broader Impacts: The new optical devices developed are likely to find significant applications in next generation computers relying on optical interconnects. The project expects to demonstrate the ability to penetrate opaque media using modulation of the incident fields, with major applications to radiology and defense technology.

具有奇偶时间反转对称性的光学微结构的相干完全吸收及吸收放大的相干控制[j]。摘要：目的：本研究的目的是在最近提出的时间反向激光作用概念的基础上，从理论上理解和实验上论证两种类型的光学器件。所使用的方法是分析和计算电磁/量子理论的集成程序，结合设计、制造和测量原型设备，说明所涉及的基本物理原理。激光器从含有放大增益介质的腔体发射具有特定场型和频率的相干电磁辐射；“时间反转”装置，一个相干的完美吸收器，是一个包含损耗介质的腔体，它将完全吸收激光发射的辐射模式。我们探索了一种更新的装置，一种包含增益和损耗介质的腔体，能够放大和衰减特定的辐射模式。知识优势：虽然激光的概念和相关设备已经研究了50多年，但相干的完美吸收器和包含损耗（或平衡损耗和增益）的设备直到最近才被提出，初步的实验实现才刚刚出现。它们的性质和基本限制，特别是在量子尺度上，还没有被理解。该理论提出了一种利用干涉来控制光的吸收和放大的新能力。更广泛的影响：新开发的光学器件可能会在依赖于光互连的下一代计算机中找到重要的应用。该项目预计将展示通过调制入射场穿透不透明介质的能力，主要应用于放射学和国防技术。