High Contrast Metastructures VIII最新文献

Mid-IR applications of resonant semiconductor metasurfaces: from "perfect" diffraction gratings to tunable harmonics generation (Conference Presentation) 谐振半导体超表面的中红外应用:从“完美”衍射光栅到可调谐谐波的产生(会议报告)

High Contrast Metastructures VIII Pub Date : 2019-03-13 DOI: 10.1117/12.2512064

G. Shvets, M. Shcherbakov, Z. Fan, M. Bosch, Kevin Werner, N. Talisa, E. Chowdhury

引用次数: 0

Metasurface full-Stokes polarization camera (Conference Presentation) 超表面full-Stokes偏振相机(会议报告)

High Contrast Metastructures VIII Pub Date : 2019-03-08 DOI: 10.1117/12.2510543

E. Arbabi, Seyedeh Mahsa Kamali, A. Arbabi, A. Faraon

引用次数: 0

Trapping light in plain sight: Topological embedded eigenstates in dielectric metasurfaces (Conference Presentation) 在普通视线中捕获光:介电超表面的拓扑嵌入特征态(会议报告)

High Contrast Metastructures VIII Pub Date : 2019-03-08 DOI: 10.1117/12.2507928

F. Monticone

引用次数: 0

Controlling LED radiation with dielectric metasurfaces (Conference Presentation) 利用介电超表面控制LED辐射(会议报告)

High Contrast Metastructures VIII Pub Date : 2019-03-08 DOI: 10.1117/12.2512037

E. Khaidarov, Zhengtong Liu, S. Ha, R. Paniagua‐Domínguez, Vytautas Valuckas, Y. Akimov, P. Bai, C. Png, Shunpeng Lu, Swee Tiam Tan, H. Demir, A. Kuznetsov

{"title":"Controlling LED radiation with dielectric metasurfaces (Conference Presentation)","authors":"E. Khaidarov, Zhengtong Liu, S. Ha, R. Paniagua‐Domínguez, Vytautas Valuckas, Y. Akimov, P. Bai, C. Png, Shunpeng Lu, Swee Tiam Tan, H. Demir, A. Kuznetsov","doi":"10.1117/12.2512037","DOIUrl":"https://doi.org/10.1117/12.2512037","url":null,"abstract":"We numerically and experimentally demonstrate that metasurfaces can be used to control the light emission from light emitting diodes (LED). This control provides a desired wavefront and functionality of the light emission in addition to enhancing light extraction efficiency. Simply placing the metasurface on top of the LED does not work as conventional metasurface designs require plane wave excitation, which LEDs cannot provide. To overcome this challenge we implement a novel concept using internal and external resonant cavities combined with the LED. Guided by our numerical simulations, we experimentally demonstrate this concept by fabricating Si and TiO2 metasurfaces on top of the resonant cavity LED structures. The integration of these metasurfaces with commercially available GaN and GaP LED devices show full wavefront control, beam deflection and beam collimation. Both the cavity and the metasurface enhance the LED radiation. Moreover, following the proposed principle, any random light emitting sources including fluorescent molecules and quantum dots can be integrated into a similar optical device to achieve focusing, beam deflecting, vortex beam generation and other capabilities.","PeriodicalId":307226,"journal":{"name":"High Contrast Metastructures VIII","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122449261","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}

引用次数: 0

Analysis and design of metasurfaces using the discrete-space impulse response technique (Conference Presentation) 基于离散空间脉冲响应技术的元曲面分析与设计(会议报告)

High Contrast Metastructures VIII Pub Date : 2019-03-08 DOI: 10.1117/12.2510098

M. Torfeh, A. Arbabi

引用次数: 1

Double-wavelength metasurface objective lens for two-photon microscopy (Conference Presentation) 双光子显微镜用双波长超表面物镜(会议报告)

High Contrast Metastructures VIII Pub Date : 2019-03-08 DOI: 10.1117/12.2510596

E. Arbabi, Jiaqi Li, Romanus J. Hutchins, Seyedeh Mahsa Kamali, A. Arbabi, Y. Horie, P. Dorpe, V. Gradinaru, D. Wagenaar, A. Faraon

{"title":"Double-wavelength metasurface objective lens for two-photon microscopy (Conference Presentation)","authors":"E. Arbabi, Jiaqi Li, Romanus J. Hutchins, Seyedeh Mahsa Kamali, A. Arbabi, Y. Horie, P. Dorpe, V. Gradinaru, D. Wagenaar, A. Faraon","doi":"10.1117/12.2510596","DOIUrl":"https://doi.org/10.1117/12.2510596","url":null,"abstract":"Two-photon microscopy is a key imaging technique in biological sciences because of its superior deep tissue imaging capabilities in addition to high transverse and axial resolution. In recent years, development of low-weight miniature two-photon microscopes has been of great interest for in vivo imaging of brain activity. Limited by these mechanical constraints, most of the developed miniature two-photon microscopes utilize graded index objective lenses that usually have inferior optical characteristics compared to conventional refractive objective lenses. Dielectric metasurfaces, a recent category of diffractive optical elements with enhanced capabilities, have proven versatile in various applications ranging from lensing to holography and polarization control. Their ultrathin form factor and potentially extremely low-weight make them very attractive for applications with stringent size and weight constraints. However, despite their success in various types of microscopy and imaging applications, they have not been previously utilized for multi-photon fluorescence microscopy. The main barrier for using metasurface lenses in multi-photon microscopy arises from their large chromatic dispersion that effectively makes them single-wavelength. Here we will present a double-wavelength metasurface lens especially designed to have the same focal length at 820 and 605 nm, corresponding to the excitation and emission wavelengths of a certain fluorophore. After characterizing the poly-silicon metasurface lens at both wavelengths, we used it in a two-photon microscopy setup and demonstrated its capability to capture two-photon images qualitatively similar to images taken with a conventional objective lens. We will also discuss the effects of chromatic dispersion of the metasurface lens on its two-photon imaging performance.","PeriodicalId":307226,"journal":{"name":"High Contrast Metastructures VIII","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117291501","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}

引用次数: 0

High-performance all-dielectric ultraviolet metasurfaces (Conference Presentation) 高性能全介电紫外超表面(会议报告)

High Contrast Metastructures VIII Pub Date : 2019-03-08 DOI: 10.1117/12.2508827

Cheng Zhang, Shawn Divitt, Qingbin Fan, Wenqi Zhu, A. Agrawal, Ting Xu, H. Lezec

引用次数: 0

Double-blind ultrafast pulse characterisation by mixed frequency generation in gold antennas (Conference Presentation) 金天线中混合频率产生的双盲超快脉冲特性(会议报告)

High Contrast Metastructures VIII Pub Date : 2019-03-08 DOI: 10.1117/12.2511463

R. Oulton, Sylvain D. Gennaro, Yi Li, S. Maier

引用次数: 0

High-contrast grating VCSELs and applications (Conference Presentation) 高对比度光栅vcsel及其应用(会议报告)

High Contrast Metastructures VIII Pub Date : 2019-03-08 DOI: 10.1117/12.2515571

C. Chang-Hasnain, K. Cook, Jonas Kapraun, Jiaxing Wang

引用次数: 0

Tunable beam-steering using all-dielectric metasurface for polarization independent MIR applications (Conference Presentation) 偏振无关MIR应用中使用全介质超表面的可调谐波束导向(会议报告)

High Contrast Metastructures VIII Pub Date : 2019-03-08 DOI: 10.1117/12.2509253

M. Abdelsalam, M. Swillam

引用次数: 0