EAGER: Collaborative Proposal: R-Optics, Light in the Optical "No-Man's Land"

EAGER：合作提案：R-Optics，光学“无人区”中的光

• 批准号: 1420176
• 负责人: Anthony Hoffman
• 金额: $ 4.15万
• 依托单位: University of Notre Dame
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-06-15 至 2015-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1420176&HistoricalAwards=false
• 关键词: EAGER; Collaborative; Proposal; Optics; Light

Abstract Title: Novel Approaches for Generating and Controlling Light in the Optical No-Man's Land of the Far-IRAbstract Content:Nontechnical: The Reststrahlen Band is the portion of the optical spectrum where materials have strong absorption of light resulting from collective vibrations of the crystal lattice. Though this band varies between materials, it generally falls between the wavelengths of 20-60 microns, and has effectively precluded the development of any significant optical infrastructure in this far-IR portion of the optical spectrum. In some sense, the Reststrahlen Band is one of the last optical frontiers. This EAGER program's innovative approach lies not only in our efforts to build a tool-set for the development of optical and optoelectronic materials and devices in the Reststrahlen band, but also in its goal of laying the foundation for further Reststrahlen band exploration by delineating a set of potential R-Optics applications and technologies. In doing so, our desire is to build the framework of an optical infrastructure for this unexplored wavelength range, demonstrating techniques for generating, manipulating, and controlling light at these long wavelengths, but also developing an understanding of the potential applications of such long-wavelength optical and optoelectronic devices for a variety of biological, chemical, medical and defense applications. Technical: The primary thrust of the EAGER will be an integrated theoretical, computational, and experimental effort to (a) demonstrate phonon-enhanced thermal emission from a range of material systems, and improve phonon-assisted light collection using self-focusing and steering surfaces, (b) expand coverage of the Reststrahlen band by i) control of free-carriers to tailor the permittivity of phononic materials and ii) isotope engineering in GaN, and (c) generate and detect optical emission from non-equilibrium phonon populations in semiconductor quantum-cascade-like devices, for the potential development of electrically-pumped Reststrahlen band sources. We will develop spatially and spectrally selective thermal sources in the Reststrahlen band, as well as mechanisms for controlling materials' Reststrahlen band optical properties. At the same time, we will look to demonstrate sources based on quasiparticle generation using quantum cascade-like devices. We will also investigate a range of material systems in order to build a library of materials (and material properties) for the development of composite optical materials for Reststrahlen band applications. Many, though not all, of our devices and materials will be grown by Molecular Beam Epitaxy, and all materials and composites will be characterized by Fourier transform infrared and Raman spectroscopy, as a function of temperature, material composition and/or geometry, and electrical (or optical) pumping power. The end result of the 18-month EAGER is ambitious: the development of an optical and optoelectronic foundation and framework for a heretofore underserved and mostly avoided wavelength range.

摘要标题：在远红外光学无人区中产生和控制光的新方法内容：非技术性的：剩余辐射带是光谱中的一部分，材料对光线有很强的吸收，这是由于晶格的集体振动造成的。 虽然该波段在材料之间变化，但其通常福尔斯落在20-60微米的波长之间，并且有效地排除了在光谱的该远IR部分中的任何重要光学基础设施的发展。 从某种意义上说，Reststrahlen带是最后的光学前沿之一。 EAGER计划的创新方法不仅在于我们努力为Reststrahlen波段的光学和光电材料和器件的开发建立一套工具，而且还在于其通过描绘一系列潜在的R-Optics应用和技术为进一步Reststrahlen波段探索奠定基础的目标。 在这样做的时候，我们的愿望是建立一个光学基础设施的框架，为这个未开发的波长范围，展示技术，产生，操纵和控制光在这些长波长，但也发展的潜在应用的理解，这种长波长的光学和光电器件的各种生物，化学，医疗和国防应用。 技术支持：EAGER的主要目标是综合理论、计算和实验工作，以（a）证明一系列材料系统的声子增强热发射，并使用自聚焦和转向表面改善声子辅助光收集，（B）通过i）控制自由载流子以定制声子材料的介电常数和ii）GaN中的同位素工程来扩大Reststrahlen带的覆盖范围，以及（c）产生和检测来自半导体量子级联类器件中的非平衡声子群的光发射，用于电泵浦Reststrahlen带源的潜在开发。 我们将开发在Reststrahlen带的空间和光谱选择性热源，以及控制材料的Reststrahlen带光学特性的机制。 与此同时，我们将着眼于展示基于准粒子生成的源，使用量子级联类设备。 我们还将研究一系列材料系统，以建立一个材料库（和材料特性），用于开发Reststrahlen带应用的复合光学材料。 尽管不是全部，但我们的许多器件和材料将通过分子束外延生长，并且所有材料和复合材料将通过傅里叶变换红外和拉曼光谱表征，作为温度、材料成分和/或几何形状以及电（或光）泵浦功率的函数。 为期18个月的EAGER的最终结果是雄心勃勃的：为迄今为止服务不足且大多避免的波长范围开发光学和光电基础和框架。