R. Sarma, S. Campione, M. Goldflam, L. Le, M. Lange, J. Shank, M. Wanke, J. Noh, P. Ye, I. Ruiz, S. Howell, M. Sinclair, J. Wendt, I. Brener
{"title":"Reflectance modulation from a metasurface coupled to intersubband transitions in semiconductor quantum wells using quantum tunneling (Conference Presentation)","authors":"R. Sarma, S. Campione, M. Goldflam, L. Le, M. Lange, J. Shank, M. Wanke, J. Noh, P. Ye, I. Ruiz, S. Howell, M. Sinclair, J. Wendt, I. Brener","doi":"10.1117/12.2321900","DOIUrl":"https://doi.org/10.1117/12.2321900","url":null,"abstract":"","PeriodicalId":346327,"journal":{"name":"Active Photonic Platforms X","volume":"2014 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121322963","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}
Kai Wang, James G. Titchener, B. Bell, A. Solntsev, D. Neshev, B. Eggleton, A. Sukhorukov
{"title":"Realization of multi-dimensional synthetic space and state measurement on a spectral lattice (Conference Presentation)","authors":"Kai Wang, James G. Titchener, B. Bell, A. Solntsev, D. Neshev, B. Eggleton, A. Sukhorukov","doi":"10.1117/12.2320811","DOIUrl":"https://doi.org/10.1117/12.2320811","url":null,"abstract":"","PeriodicalId":346327,"journal":{"name":"Active Photonic Platforms X","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121676844","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}
H. Doeleman, F. Monticone, Wouter den Hollander, A. Alú, F. Koenderink
{"title":"Experimental observation of a polarization vortex at a bound state in the continuum (Conference Presentation)","authors":"H. Doeleman, F. Monticone, Wouter den Hollander, A. Alú, F. Koenderink","doi":"10.1117/12.2320510","DOIUrl":"https://doi.org/10.1117/12.2320510","url":null,"abstract":"Bound states in the continuum (BICs) are modes that, although energy and momentum conservation allow coupling to far-field radiation, do not show any radiation loss. As such, energy can theoretically be stored in the mode for infinite time. Such states have been shown to exist for e.g. photonic and acoustic waves, and show great promise for applications including lasing, (bio)sensing and filtering. Despite intense research, the mechanism behind these states and their robustness is still poorly understood. \u0000\u0000Recently it was proposed theoretically that BICs occur at points where the far-field polarization of the radiated waves shows a vortex, i.e. points where the polarization is undefined [1]. Due to the integer winding number associated to such vortices, the modes should be topologically protected against disorder. In this work, we verify this claim experimentally. We fabricate a SiN grating and use reflection measurements to show that it supports an optical BIC around 700 nm wavelength. We then perform polarimetry measurements in a Fourier reflection microscopy scheme to map the far-field polarization at every angle and wavelength, demonstrating the existence of a vortex at the BIC. We use a simple dipole model to characterize the BIC as a Friedrich-Wintgen type, arising from the interference between two electromagnetic dipoles induced in the grating. Our method can be used to characterize the polarization structure of any leaky photonic mode, including those supporting polarization vortices of arbitrary winding numbers. \u0000\u0000[1] Zhen, B., et al. (2014). Physical review letters, 113(25), 257401.","PeriodicalId":346327,"journal":{"name":"Active Photonic Platforms X","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116808773","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}
S. Saha, A. Dutta, C. DeVault, V. Shalaev, A. Boltasseva
{"title":"Ultrafast all-optical switching in a continuous layer gap plasmon metasurface (Conference Presentation)","authors":"S. Saha, A. Dutta, C. DeVault, V. Shalaev, A. Boltasseva","doi":"10.1117/12.2320585","DOIUrl":"https://doi.org/10.1117/12.2320585","url":null,"abstract":"All-optical nanophotonic switches, not bound by the inherent RC delays of electronic circuits, have the potential to push data-processing speeds beyond the limits of Moore’s Law. This has lead to the investigation of light-matter interactions in nanostructured materials in several all-optical data processing applications. To have a true impact on the field of ultrafast data-transfer, it is important to demonstrate switching in the telecom frequency range.\u0000We have designed a continuous layer gap plasmon metasurface, comprising a layer of gold nanodisk resonators on a 20 nm film of ZnO deposited on an optically thick gold layer. The performance of the metasurface has been investigated through numerical studies, using the optical properties of as-grown gold and zinc oxide, characterized by ellipsometry. An on-off ratio of 10.6 dB has been observed in simulations. Experimental studies are underway. The findings of this research work will pave the pathway to the design of ultra-compact and ultrafast optical switches employing ultrafast, dynamically tunable metasurfaces.","PeriodicalId":346327,"journal":{"name":"Active Photonic Platforms X","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124830869","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}
Qiang Wang, K. Ding, Hui Liu, Shi-ning Zhu, C. Chan
{"title":"PT-symmetric interface states based on synthetic 4D topological space (Conference Presentation)","authors":"Qiang Wang, K. Ding, Hui Liu, Shi-ning Zhu, C. Chan","doi":"10.1117/12.2321010","DOIUrl":"https://doi.org/10.1117/12.2321010","url":null,"abstract":"","PeriodicalId":346327,"journal":{"name":"Active Photonic Platforms X","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133241646","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}