OP: Nonlinear Optical Properties of Organic Cavity Polaritons

OP：有机腔极化子的非线性光学特性

• 批准号: 1609077
• 负责人: Kenneth Singer
• 金额: $ 45.55万
• 依托单位: Case Western Reserve University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-09-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1609077&HistoricalAwards=false
• 关键词: OP; Nonlinear; Optical; Properties; Organic

Nontechnical description: The interaction of light with matter capable of light absorption and emission is of fundamental and long-standing scientific and technological interest. This interaction can be enhanced by using miniature optical cavities made of two mirrors, in which light repeatedly bounces back and forth while traversing the absorbing medium. This structure forms the basis of the laser. Organic dyes, commonly used for making lasers, exhibit particularly enhanced behavior when placed in ultrasmall optical cavities, often exemplified by unusually large color changes. This project addresses nonlinear optical effects in optical cavities smaller than the wavelength of light, in which the aforementioned enhancements are particularly strong. The optical cavities coupled with the special optical materials exhibiting these exceptionally strong interactions can be dynamically controlled, and, as a result, the optical performance of these systems. The phenomena addressed in this project have potential applications in optical information processing and communications, and in such technologies as holographic displays. The graduate and undergraduate students involved in this project are also involved in mentoring and outreach programs for students from underrepresented groups in the inner cities in northeast Ohio.Technical description: Ultrastrong coupling between photons and excitons in microcavities containing organic dyes and semiconductors has been recently observed at room temperature. The unusually strong interactions dovetail with the robust nonlinear optical responses of the same materials. This provides a new and promising hybrid material for photonics. This project explores the nonlinear optical properties of organic materials as active elements in nanoscale low-Q optical cavities in the regime of strong and ultrastrong photon-exciton coupling of cavity polaritons. In this regime, the physics of quantum cavity electrodynamics describes significant changes in the spectral dispersion of the composite structure. Contributions to the AC Stark effect is the focus of studies implying particular attention to spectral response of the nonlinear optical interaction and manipulation of the spectrum by varying the cavity resonance, for example, by angle tuning. Well-studied organic glass forming nonlinear optical materials incorporated into metal mirror cavities of low-Q are being investigated, experimentally and theoretically, in a number of cavity configurations to determine their nonlinear optical response for the optical Kerr effect, third harmonic generation and photorefraction.

非技术描述：光与能够吸收光和排放的物质的相互作用具有基本和长期的科学和技术兴趣。可以通过使用由两个镜子制成的微型光学腔来增强这种相互作用，其中光在穿越吸收介质的同时反复反弹。该结构构成了激光的基础。通常用于制作激光器的有机染料将其放置在超质光腔中时表现出特别增强的行为，通常以异常大的颜色变化为例。该项目解决了小于光波长的光腔中的非线性光学效应，在该波长中，上述增强功能特别强。 可以动态控制这些异常相互作用的光学腔与表现出极强相互作用的特殊光学材料，因此可以动态控制这些系统的光学性能。该项目中涉及的现象在光学信息处理和通信以及全息显示器等技术中具有潜在的应用。参与该项目的研究生和本科生还参与了俄亥俄州东北部城市中代表性不足的群体的学生的指导和外展计划。技术描述：最近在室温下，在含有有机染料和半导体的微腔中的光子和激烈腔之间的激光耦合。 异常强烈的相互作用与相同材料的鲁棒非线性光学响应相吻合。这为光子学提供了一种新颖而有希望的混合材料。该项目探讨了有机材料的非线性光学特性，作为纳米级低Q光腔的活性元件，在强和超肌光子光子上的腔层耦合方面。在这个方案中，量子腔电动力学的物理学描述了复合结构的光谱分散体的显着变化。对AC Stark效应的贡献是研究的重点，暗示着通过改变腔体共振（例如，通过角度调音）来特别关注非线性光学相互作用和频谱操纵的光谱响应。在许多空腔构型中，正在研究纳入低Q金属镜腔中的非线性光学材料的精心研究的非线性光学材料，以确定其光学KERR效应，第三谐波产生和光倍率的非线性光学响应。