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2019 IEEE Research and Applications of Photonics in Defense Conference (RAPID)最新文献

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Electrically Switchable Color Changes in Lying Helix Cholesteric Liquid Crystals 躺着的螺旋胆甾液晶中可电切换的颜色变化
2019 IEEE Research and Applications of Photonics in Defense Conference (RAPID) Pub Date : 2019-08-01 DOI: 10.1109/rapid.2019.8864403
K. Lee, M. Mills, V. Reshetnyak, D. Evans, T. Bunning, M. McConney, V. Reshetnyak
{"title":"Electrically Switchable Color Changes in Lying Helix Cholesteric Liquid Crystals","authors":"K. Lee, M. Mills, V. Reshetnyak, D. Evans, T. Bunning, M. McConney, V. Reshetnyak","doi":"10.1109/rapid.2019.8864403","DOIUrl":"https://doi.org/10.1109/rapid.2019.8864403","url":null,"abstract":"Cholesteric liquid crystal (CLC) is a one-dimensional photonic material with a self-assembled helical structure of either a right-handed or left-handed circular rotation of the nematic liquid crystal director along a helical axis. Previously we reported dynamic EO response in polymer stabilized cholesteric liquid crystals (PSCLCs) prepared with negative dielectric anisotropy (Δε < 0) nematic liquid crystal hosts, including DC field induced bandwidth broadening [1–4], red shifting tuning [5,6], blue shifting tuning [7] and scattering switching [8] responses. This dynamic EO response is explained by the electromechanical deformation of the polymer network directly affecting the pitch of the CLC.","PeriodicalId":143675,"journal":{"name":"2019 IEEE Research and Applications of Photonics in Defense Conference (RAPID)","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125740594","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
Evaluation of Performance, Non-Uniformity and Thermal Limits for Infrared LED Scene Projectors 红外LED场景投影仪的性能、不均匀性和热极限评估
2019 IEEE Research and Applications of Photonics in Defense Conference (RAPID) Pub Date : 2019-08-01 DOI: 10.1109/RAPID.2019.8864380
Peyman Barakhshan, C. Campbell, Miguel Hernandez, F. Kiamilev
{"title":"Evaluation of Performance, Non-Uniformity and Thermal Limits for Infrared LED Scene Projectors","authors":"Peyman Barakhshan, C. Campbell, Miguel Hernandez, F. Kiamilev","doi":"10.1109/RAPID.2019.8864380","DOIUrl":"https://doi.org/10.1109/RAPID.2019.8864380","url":null,"abstract":"As the light emitting diodes Infrared Scene Projectors are evolving, the need to evaluate the performance and non-uniformity is at it is all times highest. This paper will describe how the performance of these systems are measured and how the non-uniformity is measured and corrected.","PeriodicalId":143675,"journal":{"name":"2019 IEEE Research and Applications of Photonics in Defense Conference (RAPID)","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127775623","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: 1
Longitudinal Study to Evaluate Reliability, Repeatability, and Reproducibility of Infrared Led Scene Projectors 评价红外Led场景投影仪的可靠性、可重复性和再现性的纵向研究
2019 IEEE Research and Applications of Photonics in Defense Conference (RAPID) Pub Date : 2019-08-01 DOI: 10.1109/RAPID.2019.8864398
Alexis Deputy, F. Kiamilev, Peyman Barakhshan, A. Landwehr
{"title":"Longitudinal Study to Evaluate Reliability, Repeatability, and Reproducibility of Infrared Led Scene Projectors","authors":"Alexis Deputy, F. Kiamilev, Peyman Barakhshan, A. Landwehr","doi":"10.1109/RAPID.2019.8864398","DOIUrl":"https://doi.org/10.1109/RAPID.2019.8864398","url":null,"abstract":"As Infrared LED (IRLED) scene projector (IRSP) technology advances, the need to test for consistency and longevity also becomes more crucial. This paper characterizes the tests used to measure the reliability, repeatability, and reproducibility (R3) of an IRLED scene projector and the outcomes.","PeriodicalId":143675,"journal":{"name":"2019 IEEE Research and Applications of Photonics in Defense Conference (RAPID)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129481166","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: 1
Enhancing Operator Performance and Safety through Active Optical State Sensing and Automation Support 通过主动光学状态传感和自动化支持增强操作员性能和安全性
2019 IEEE Research and Applications of Photonics in Defense Conference (RAPID) Pub Date : 2019-08-01 DOI: 10.1109/RAPID.2019.8864422
Leonard S. Cech
{"title":"Enhancing Operator Performance and Safety through Active Optical State Sensing and Automation Support","authors":"Leonard S. Cech","doi":"10.1109/RAPID.2019.8864422","DOIUrl":"https://doi.org/10.1109/RAPID.2019.8864422","url":null,"abstract":"Vehicle drivers experience complex, continually evolving operational environments and task complexity, completely analogous to military analysts or operators. New machine assistance and automation technologies change the role and responsibility of driver/operators. This paper presents trends in photonic systems which can enhance operator performance and safety.","PeriodicalId":143675,"journal":{"name":"2019 IEEE Research and Applications of Photonics in Defense Conference (RAPID)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133506803","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
Observation of Broadband Electrically Tunable THz Metamaterials Polarization Conversion 宽带电可调谐太赫兹超材料偏振转换的观察
2019 IEEE Research and Applications of Photonics in Defense Conference (RAPID) Pub Date : 2019-08-01 DOI: 10.1109/RAPID.2019.8864300
S. Kim, M. Z. Gungordu, E. Philip, Sharmistha Pal, Hancheng Shen, P. Kung
{"title":"Observation of Broadband Electrically Tunable THz Metamaterials Polarization Conversion","authors":"S. Kim, M. Z. Gungordu, E. Philip, Sharmistha Pal, Hancheng Shen, P. Kung","doi":"10.1109/RAPID.2019.8864300","DOIUrl":"https://doi.org/10.1109/RAPID.2019.8864300","url":null,"abstract":"Terahertz (THz) spectral region remains a scientifically rich but technologically underdeveloped research area. Since many molecules possess THz spectral fingerprints (ranging from 0.1THz up to 10 THz), and a large variety of non-conductive materials are transparent to THz radiation. THz radiation promises various potential applications. Nonetheless, there exists a shortage of natural materials capable of interacting with THz radiation from which useful THz detectors, emitters, switches, and other devices may be manufactured. Metamaterials, artificially designable structures that render desired optical properties at a given wavelength, could be alternative candidates to design THz devices. They are made by assembling sub-wavelength unit cells called meta-atoms. Metamaterials are well-known for their interesting electromagnetic characteristics. They exhibit extraordinary and unusual responses such as negative refractive index, subwavelength imaging, and invisibility cloak. Polarization conversion devices play a paramount role in the field of photonics because of their ability to manipulate the polarization state of electromagnetic (EM) waves. Such devices have paved the way to significant advancements in prominent technological fields such as communication, imaging, and remote sensing. Recent researches confirm that polarization conversion of the EM waves in the THz frequency regime can be achieved using metamaterials (MM). MMs are artificial materials forged by repeated arrays of sub-wavelength sized meta-atoms. With appropriate designing of these meta-atoms, they can be engineered to manipulate various aspects of the EM wave interacting with them, especially its polarization state.","PeriodicalId":143675,"journal":{"name":"2019 IEEE Research and Applications of Photonics in Defense Conference (RAPID)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131558498","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
Modulating Two-Photon Polymerisation Fabrication Parameters towards the Production of Gradient Index Optics 调制双光子聚合制备参数制备梯度折射率光学器件
2019 IEEE Research and Applications of Photonics in Defense Conference (RAPID) Pub Date : 2019-08-01 DOI: 10.1109/RAPID.2019.8864248
Emma Woods, M. Fromhold, R. Wildman, C. Tuck
{"title":"Modulating Two-Photon Polymerisation Fabrication Parameters towards the Production of Gradient Index Optics","authors":"Emma Woods, M. Fromhold, R. Wildman, C. Tuck","doi":"10.1109/RAPID.2019.8864248","DOIUrl":"https://doi.org/10.1109/RAPID.2019.8864248","url":null,"abstract":"Metamaterial fabrication by two-photon polymerisation is suggested. Altering fabrication parameters (laser power and scan speed) controls the resulting line widths. Understanding possible line widths is key to understanding how the geometry can be changed across a metamaterial device leading to gradient index (GRIN) optics.","PeriodicalId":143675,"journal":{"name":"2019 IEEE Research and Applications of Photonics in Defense Conference (RAPID)","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132165356","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: 1
Generation of Broad Spectral Components from Mid-Infrared Ultrashort Pulse Laser Propagation through Single- and Poly-Crystalline Optical Materials 中红外超短脉冲激光通过单晶和多晶光学材料传播产生的广谱成分
2019 IEEE Research and Applications of Photonics in Defense Conference (RAPID) Pub Date : 2019-08-01 DOI: 10.1109/RAPID.2019.8864347
Kevin Werner, M. Tripepi, A. Schweinsberg, Laura R. Vanderhoef, Christopher Wolfe, T. Ensley, B. Wilmer, E. Chowdhury, A. Valenzuela
{"title":"Generation of Broad Spectral Components from Mid-Infrared Ultrashort Pulse Laser Propagation through Single- and Poly-Crystalline Optical Materials","authors":"Kevin Werner, M. Tripepi, A. Schweinsberg, Laura R. Vanderhoef, Christopher Wolfe, T. Ensley, B. Wilmer, E. Chowdhury, A. Valenzuela","doi":"10.1109/RAPID.2019.8864347","DOIUrl":"https://doi.org/10.1109/RAPID.2019.8864347","url":null,"abstract":"We investigated the nonlinear optical properties of single- and poly-crystalline optical materials using ultrashort mid-infrared laser pulses between 3 and 4 μm. We compared visible to mid-infrared spectra between the materials. Measured energy conversion into all-order harmonics in polycrystalline materials exceeded 30%.","PeriodicalId":143675,"journal":{"name":"2019 IEEE Research and Applications of Photonics in Defense Conference (RAPID)","volume":"172 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133613527","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
An Effective Rate Equation Model for Energy Transfer from Ruthenium Trisbipyridine to Anthracene 三联吡啶钌向蒽传递能量的有效速率方程模型
2019 IEEE Research and Applications of Photonics in Defense Conference (RAPID) Pub Date : 2019-08-01 DOI: 10.1109/RAPID.2019.8864239
T. Pritchett, Ryan M. O’Donnell, Thomas N Rohrabaugh
{"title":"An Effective Rate Equation Model for Energy Transfer from Ruthenium Trisbipyridine to Anthracene","authors":"T. Pritchett, Ryan M. O’Donnell, Thomas N Rohrabaugh","doi":"10.1109/RAPID.2019.8864239","DOIUrl":"https://doi.org/10.1109/RAPID.2019.8864239","url":null,"abstract":"We employ the well-studied donor/acceptor system consisting of tris(2,2′-bipyridine)ruthenium(II) and anthracene to validate a simple rate equation model for energy transfer and subsequent dimerization of the excited anthracene acceptor.","PeriodicalId":143675,"journal":{"name":"2019 IEEE Research and Applications of Photonics in Defense Conference (RAPID)","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133726087","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: 1
Simplified Sum-Over-States Model Applied to Ultrafast Nonlinear Optical Measurements of Two-Photon Absorbing Chromophores 简化和过态模型在双光子吸收发色团超快非线性光学测量中的应用
2019 IEEE Research and Applications of Photonics in Defense Conference (RAPID) Pub Date : 2019-08-01 DOI: 10.1109/RAPID.2019.8864267
T. Ensley, Ryan M. O’Donnell, T. Pritchett, J. Haley, Loon-Seng Tan
{"title":"Simplified Sum-Over-States Model Applied to Ultrafast Nonlinear Optical Measurements of Two-Photon Absorbing Chromophores","authors":"T. Ensley, Ryan M. O’Donnell, T. Pritchett, J. Haley, Loon-Seng Tan","doi":"10.1109/RAPID.2019.8864267","DOIUrl":"https://doi.org/10.1109/RAPID.2019.8864267","url":null,"abstract":"We investigate the nonlinear optical properties of a series of two-photon absorbing chromophores in the femtosecond regime using both two-photon induced fluorescence spectroscopy and the Z-scan technique. We apply a simplified sum-over-states model to the experimental data to predict nonlinear refraction.","PeriodicalId":143675,"journal":{"name":"2019 IEEE Research and Applications of Photonics in Defense Conference (RAPID)","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115732744","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
Single Shot Axially Resolved Femtosecond Laser Filament Profiles 单镜头轴向分辨飞秒激光灯丝轮廓
2019 IEEE Research and Applications of Photonics in Defense Conference (RAPID) Pub Date : 2019-08-01 DOI: 10.1109/RAPID.2019.8864263
I. Larkin, J. Griff-McMahon, A. Schweinsberg, A. Valenzuela, H. Milchberg
{"title":"Single Shot Axially Resolved Femtosecond Laser Filament Profiles","authors":"I. Larkin, J. Griff-McMahon, A. Schweinsberg, A. Valenzuela, H. Milchberg","doi":"10.1109/RAPID.2019.8864263","DOIUrl":"https://doi.org/10.1109/RAPID.2019.8864263","url":null,"abstract":"An array of synchronized microphones measures energy deposition along the length of laser filament in a single shot. A spread of collapse location positions due to air turbulence and laser energy fluctuations causes a pronounced difference between single shot measurements and conventional multi-shot averaging.","PeriodicalId":143675,"journal":{"name":"2019 IEEE Research and Applications of Photonics in Defense Conference (RAPID)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114994012","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
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