EAGER: Gate tunable thermo-plasmonic mid-IR coherent light emitters

EAGER：门可调谐热等离子体中红外相干光发射器

• 批准号: 2016636
• 负责人: Srinivas Tadigadapa
• 金额: $ 11万
• 依托单位: Northeastern University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-06-15 至 2023-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2016636&HistoricalAwards=false
• 关键词: EAGER; Gate; tunable; thermo; plasmonic

The goal of this work is to demonstrate wavelength-tunable, laser-like, mid-infrared light emitters on a chip. This will be achieved, for the first time, by coupling of surface resonance in silicon carbide with plasmonic resonance in graphene films. The proposed tunable, mid-infrared source has many advantages over existing coherent infrared sources such as tunable lasers which include complete mechanical motion free tunability of wavelength, small size for various lightweight and mobile platforms, and extremely fast response for high speed applications. The small form factor, tunability and integration potential of these devices will usher a new generation of optical lab-on-chip devices where detection of relevant biomarkers, cells, and ligand chemistries can be spectroscopically realized and thus will enable the development of inexpensive, next generation point of care biosensors. The availability of frequency tunable emitters is likely to open opportunities in the area of on-chip optical communications and optical data transfer that are hitherto considered as cumbersome. The potential bandwidth afforded by such systems may revolutionize data transfer rates and volumes. A robust research and mentoring program consisting of a graduate and undergraduate student working on the project is proposed for this 1-year EAGER proposal.This proposal aims to explore, investigate, and demonstrate the possibility of achieving tunable, coherent radiation sources in 11 - 12 μm wavelength range. To accomplish this, we propose to hybridize the localized surface resonance of bulk thermo-plasmonic materials such as silicon carbide with gate-tunable surface plasmonic resonance of two-dimensional materials such as graphene to manipulate the emission characteristics of thermal radiation sources. The proposed experimental study will examine the relation between applied gate-voltage modulated optical properties of graphene, and the corresponding shift in coupled plasmonic and phononic resonance. The study is aimed at deepening the understanding of the coupling between surface phonon resonances of a radiating surface and gate tunable surface plasmon resonance of graphene sheets. The fact that surface phonons and surface plasmons are consequences of resonant ions and electrons respectively raises interesting questions of how momentum matching is balanced between particles of different rest masses. This study will present details of theoretical and the experimentally obtained emission/absorption properties at different temperatures and different wavelengths, specifically, the minimum resolution of wavelength shift that can be achieved with gate-voltage and temperature. From an experimental standpoint, the proposed work will systematically investigate plasmonic tuning of the emission characteristics. Heterogeneous integration techniques with novel micro and nanofabrication methods will be used. The electronic control will allow for programmability of the emitter to auto-sweep through a band of wavelength of interest, to determine the absorption spectrum of samples in spectroscopy applications. The wavelength sweep timeframes of the spectrometers can be potentially accomplished in the milli – nano seconds allowing for the realization of ultrafast IR tunable sources. The fast, narrowband emission characteristics of the gate-tunable plasmonic emitters can provide nearfield infrared communication solutions in the context of next generation neuromorphic computing and sensing devices. Preliminary calculations show that these sources can generate an intensity of ~200 µW/mm2 and should be enough for spectroscopy and communication applications.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

这项工作的目的是通过在碳化物中的表面共振与等离烯膜中的等离子共振来证明E-In-In-Infrade Light发射器。随着可调激光运动的波长无调，小尺寸的堡垒轻量级和移动平台的pplications pplications pplications。 Be Spectroscopilly Int the Opentials的可用性可能会在该区域开放式光学通信d光学数据转移迄今为止，该系统的潜在带宽可能会彻底改变数据传输速度由研究生和本科生组成的研究和指导计划是项目SAL。此提案旨在探索，调查和证明在11-12μm波长范围内实现可调的，连贯的辐射源的可能性。大量热质量母校的表面共振作为硅IDE，具有栅极可调的表面表面等离子体谐振二维材料（例如石墨烯），以操纵热RA源的发射特性。支撑的实验研究将检查电压之间的关系，耦合等离子和语音性神性偶联的光学特性。匹配的匹配量不同，理论的细节和实验性的差异在不同的波长sysedpoint上获得的发射/吸收特性，而波长的工作工作则逐渐估计。使用的方法。在下一代神经形态计算和传感设备的背景下，栅极可调的等离子发射器可以提供近场红外的交流解决方案。影响审查标准。