Direct experimental elucidation of steady-state energy distributions of hot-carriers in plasmonic nanostructures is key for systematically advancing and evaluating competing theoretical frameworks as well as for rationally engineering hot-carrier technologies. In this study, we present a novel scanning probe-based approach and show that quantum transport measurements from single molecule junctions, created by trapping suitably chosen single molecules between an ultra-thin gold film supporting surface plasmon polaritons and a scanning tunneling microscope probe tip, can enable quantification of plasmonic hot-carrier energy distributions. Several key physical insights on the nature of hot-carrier distributions, obtained from these measurements, will be discussed.
{"title":"Revealing the energy spectrum of plasmonic hot-carriers via single molecule transport measurements","authors":"V. Shalaev","doi":"10.1117/12.2595726","DOIUrl":"https://doi.org/10.1117/12.2595726","url":null,"abstract":"Direct experimental elucidation of steady-state energy distributions of hot-carriers in plasmonic nanostructures is key for systematically advancing and evaluating competing theoretical frameworks as well as for rationally engineering hot-carrier technologies. In this study, we present a novel scanning probe-based approach and show that quantum transport measurements from single molecule junctions, created by trapping suitably chosen single molecules between an ultra-thin gold film supporting surface plasmon polaritons and a scanning tunneling microscope probe tip, can enable quantification of plasmonic hot-carrier energy distributions. Several key physical insights on the nature of hot-carrier distributions, obtained from these measurements, will be discussed.","PeriodicalId":389503,"journal":{"name":"Metamaterials, Metadevices, and Metasystems 2021","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116914837","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In this summary, we report an experimental demonstration of a low-loss multilayer-based ENZ metafilm. The demonstrated ENZ metafilm consists of alternating layers of Ag and SiN. The optical properties, such as the effective plasma frequency and damping coefficients, of the demonstrated metafilm were controlled by changing the volume fraction of the metal layer. The measured effective permittivity values from an ellipsometry analysis show good agreement with the calculated results using a simple Maxwell-Garnett effective medium theory.
{"title":"Engineered epsilon-near-zero metafilm with Ag-SiNx multilayer structure","authors":"J. Ni","doi":"10.1117/12.2593859","DOIUrl":"https://doi.org/10.1117/12.2593859","url":null,"abstract":"In this summary, we report an experimental demonstration of a low-loss multilayer-based ENZ metafilm. The demonstrated ENZ metafilm consists of alternating layers of Ag and SiN. The optical properties, such as the effective plasma frequency and damping coefficients, of the demonstrated metafilm were controlled by changing the volume fraction of the metal layer. The measured effective permittivity values from an ellipsometry analysis show good agreement with the calculated results using a simple Maxwell-Garnett effective medium theory.","PeriodicalId":389503,"journal":{"name":"Metamaterials, Metadevices, and Metasystems 2021","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121936977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
P. Hon, Katherine T Fountaine, S. Larouche, M. DuPuis, E. Poutrina, M. Marciniak, Matthew R. Miller, A. Urbas
Incorporating planar optics such as metalenses or metacorrectors into optical designs can drastically improve the performance of imaging systems with additional benefits such as cost, size and weight improvements. However, modeling of such hybrid lenses is challenging because of the multiscale nature of the simulation. In this presentation, we show how to combine ray optic simulations with full wave simulations and Fourier optics approaches to model a whole compound lens considering all metasurface unit cell interactions and to study the effect of possible fabrication errors.
{"title":"Designing hybrid lenses using metaoptics for enhanced optical performance","authors":"P. Hon, Katherine T Fountaine, S. Larouche, M. DuPuis, E. Poutrina, M. Marciniak, Matthew R. Miller, A. Urbas","doi":"10.1117/12.2596639","DOIUrl":"https://doi.org/10.1117/12.2596639","url":null,"abstract":"Incorporating planar optics such as metalenses or metacorrectors into optical designs can drastically improve the performance of imaging systems with additional benefits such as cost, size and weight improvements. However, modeling of such hybrid lenses is challenging because of the multiscale nature of the simulation. In this presentation, we show how to combine ray optic simulations with full wave simulations and Fourier optics approaches to model a whole compound lens considering all metasurface unit cell interactions and to study the effect of possible fabrication errors.","PeriodicalId":389503,"journal":{"name":"Metamaterials, Metadevices, and Metasystems 2021","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123848125","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
R. Osgood, Y. Ait-El-Aoud, S. Dinneen, S. Giardini, Mengqiu Yu, Jin-ho Kim, Silverio Johnson, P. Moroshkin, Jimmy Xu, G. Strack, A. Akyurtlu, L. Parameswaran, Christopher Roberts, M. Rothschild
{"title":"Infrared-scattering sharply resonant nonlinear metasurfaces","authors":"R. Osgood, Y. Ait-El-Aoud, S. Dinneen, S. Giardini, Mengqiu Yu, Jin-ho Kim, Silverio Johnson, P. Moroshkin, Jimmy Xu, G. Strack, A. Akyurtlu, L. Parameswaran, Christopher Roberts, M. Rothschild","doi":"10.1117/12.2594572","DOIUrl":"https://doi.org/10.1117/12.2594572","url":null,"abstract":"","PeriodicalId":389503,"journal":{"name":"Metamaterials, Metadevices, and Metasystems 2021","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126109178","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
State-of-the-art microscopes use intense lasers that can severely disturb biological processes, function and viability. This introduces hard limits on performance that only quantum photon correlations can overcome. In this talk I will report recent work from my laboratory which demonstrates this absolute quantum advantage [1]. We show, specifically, that quantum correlations enable signal-to-noise beyond the photodamage-free capacity of conventional microscopy. Broadly, this represents the first demonstration that quantum correlations can allow sensing beyond the limits introduced by optical intrusion upon the measurement process. We achieve this in a coherent Raman microscope, which we use to image molecular bonds within a cell with both quantum-enhanced contrast and sub-wavelength resolution. This allows the observation of nanoscale biological structures that would otherwise not be resolved. Coherent Raman microscopes allow highly selective biomolecular finger-printing in unlabelled specimens, but photodamage is a major roadblock for many applications. By showing that this roadblock can be overcome, our work provides a path towards order-of-magnitude improvements in both sensitivity and imaging speed.
{"title":"Absolute quantum advantage in light microscopy","authors":"W. Bowen","doi":"10.1117/12.2603654","DOIUrl":"https://doi.org/10.1117/12.2603654","url":null,"abstract":"State-of-the-art microscopes use intense lasers that can severely disturb biological processes, function and viability. This introduces hard limits on performance that only quantum photon correlations can overcome. In this talk I will report recent work from my laboratory which demonstrates this absolute quantum advantage [1]. We show, specifically, that quantum correlations enable signal-to-noise beyond the photodamage-free capacity of conventional microscopy. Broadly, this represents the first demonstration that quantum correlations can allow sensing beyond the limits introduced by optical intrusion upon the measurement process. We achieve this in a coherent Raman microscope, which we use to image molecular bonds within a cell with both quantum-enhanced contrast and sub-wavelength resolution. This allows the observation of nanoscale biological structures that would otherwise not be resolved. Coherent Raman microscopes allow highly selective biomolecular finger-printing in unlabelled specimens, but photodamage is a major roadblock for many applications. By showing that this roadblock can be overcome, our work provides a path towards order-of-magnitude improvements in both sensitivity and imaging speed.","PeriodicalId":389503,"journal":{"name":"Metamaterials, Metadevices, and Metasystems 2021","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133515490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Optical metadevices are commonly simulated using ideal structures. These perfect geometries are useful for finding significant features of their optical response. In practice, fabrication of such metadevices often results in non-ideal rough structures. Surface roughness is relatively difficult to implement for non-parametrically generated metadevice geometries. We present a method of simulating the effects of surface roughness on the optical response of metastructures using open source Python packages to generate rough importable meshes. The optical response is then simulated using a FEM solver. By simulating many structures with identical roughness statistics, we demonstrate inhomogeneous broadening in the average response.
{"title":"Surface roughness simulation in topologically complex optical metadevices and metasystems","authors":"Samuel Peana, Tin T. Trong, A. Kildishev","doi":"10.1117/12.2594369","DOIUrl":"https://doi.org/10.1117/12.2594369","url":null,"abstract":"Optical metadevices are commonly simulated using ideal structures. These perfect geometries are useful for finding significant features of their optical response. In practice, fabrication of such metadevices often results in non-ideal rough structures. Surface roughness is relatively difficult to implement for non-parametrically generated metadevice geometries. We present a method of simulating the effects of surface roughness on the optical response of metastructures using open source Python packages to generate rough importable meshes. The optical response is then simulated using a FEM solver. By simulating many structures with identical roughness statistics, we demonstrate inhomogeneous broadening in the average response.","PeriodicalId":389503,"journal":{"name":"Metamaterials, Metadevices, and Metasystems 2021","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123262224","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Recent years have seen growing interest to the applications of hot carriers generated in plasmonic structures for photodetection and photocatalysis. Many questions, however, still remain waiting for answer, starting from exactly what is the physical mechanism enabling these applications and culminating in what is the ultimate efficiency of hot carrier plasmonic processes. In my talk I will attempt to answer at least some of these questions.
{"title":"Hot carriers in plasmonic structures: another look","authors":"J. Khurgin","doi":"10.1117/12.2595770","DOIUrl":"https://doi.org/10.1117/12.2595770","url":null,"abstract":"Recent years have seen growing interest to the applications of hot carriers generated in plasmonic structures for photodetection and photocatalysis. Many questions, however, still remain waiting for answer, starting from exactly what is the physical mechanism enabling these applications and culminating in what is the ultimate efficiency of hot carrier plasmonic processes. In my talk I will attempt to answer at least some of these questions.","PeriodicalId":389503,"journal":{"name":"Metamaterials, Metadevices, and Metasystems 2021","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125054606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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