Yu-hsin Chia, C. H. Chu, S. Vyas, Yi-You Huang, D. Tsai, Yuan Luo
Microscopy is an essential tool for biomedical research and clinical diagnosis. Nevertheless, conventional wide-field imaging system lacks optical sectioning ability, restricting applications in thick tissues. Recently, HiLo microscopy improved sectioning efficiency but still requires axial movement. Here, we propose the Moiré metalens to develop the varifocal metalens based fluorescence optical sectioning microscopy. It leveraging metasurfaces capabilities to control optical properties. Our system enables optical sectioning and 3D imaging capability. We demonstrate multiplane HiLo optically sectioned images of fluorescent microspheres and ex-vivo mouse brain tissues. This technique opens new possibilities for high-contrast microscopy in biomedical research and clinical diagnosis.
{"title":"Moiré metalens-based fluorescence optical sectioning microscopy","authors":"Yu-hsin Chia, C. H. Chu, S. Vyas, Yi-You Huang, D. Tsai, Yuan Luo","doi":"10.1117/12.2676655","DOIUrl":"https://doi.org/10.1117/12.2676655","url":null,"abstract":"Microscopy is an essential tool for biomedical research and clinical diagnosis. Nevertheless, conventional wide-field imaging system lacks optical sectioning ability, restricting applications in thick tissues. Recently, HiLo microscopy improved sectioning efficiency but still requires axial movement. Here, we propose the Moiré metalens to develop the varifocal metalens based fluorescence optical sectioning microscopy. It leveraging metasurfaces capabilities to control optical properties. Our system enables optical sectioning and 3D imaging capability. We demonstrate multiplane HiLo optically sectioned images of fluorescent microspheres and ex-vivo mouse brain tissues. This technique opens new possibilities for high-contrast microscopy in biomedical research and clinical diagnosis.","PeriodicalId":13820,"journal":{"name":"International Conference on Nanoscience, Engineering and Technology (ICONSET 2011)","volume":"162 1","pages":"126480F - 126480F-4"},"PeriodicalIF":0.0,"publicationDate":"2023-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73126551","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}
J. P. Cuanalo, Irving Gazga, I. Cosme-Bolanos, N. Korneev, Rebeca Lugo, Rubén Ramos, S. Mansurova
In this work, we investigate the plasmonic response of a random metasurface based on gold nano-islands (AuNI) in an attenuated total reflectance (ATR) configuration. AuNI structures were obtained by thermal annealing of an ultrathin gold film deposited on a glass substrate. The samples exhibited a wide range of sizes and particle densities, varying the nominal gold thickness. For p polarization, a well-defined localized surface plasmon resonance (LSPR) dip was observed in all samples, while for s polarization, only AuNI with the smallest radii showed this dip. Some samples exhibited nearly zero reflection at the resonance wavelength. The highest sensitivity among all tested samples was achieved in these samples, providing potential for optimizing LSPR transducers in sensing applications. Notably, the resonance wavelength exhibited a nonlinear dependence on the refractive index in sensitivity measurements displaying a blue shift.
{"title":"Plasmonic response of a random metasurface based on gold nano-islands in attenuated total reflectance configuration","authors":"J. P. Cuanalo, Irving Gazga, I. Cosme-Bolanos, N. Korneev, Rebeca Lugo, Rubén Ramos, S. Mansurova","doi":"10.1117/12.2677728","DOIUrl":"https://doi.org/10.1117/12.2677728","url":null,"abstract":"In this work, we investigate the plasmonic response of a random metasurface based on gold nano-islands (AuNI) in an attenuated total reflectance (ATR) configuration. AuNI structures were obtained by thermal annealing of an ultrathin gold film deposited on a glass substrate. The samples exhibited a wide range of sizes and particle densities, varying the nominal gold thickness. For p polarization, a well-defined localized surface plasmon resonance (LSPR) dip was observed in all samples, while for s polarization, only AuNI with the smallest radii showed this dip. Some samples exhibited nearly zero reflection at the resonance wavelength. The highest sensitivity among all tested samples was achieved in these samples, providing potential for optimizing LSPR transducers in sensing applications. Notably, the resonance wavelength exhibited a nonlinear dependence on the refractive index in sensitivity measurements displaying a blue shift.","PeriodicalId":13820,"journal":{"name":"International Conference on Nanoscience, Engineering and Technology (ICONSET 2011)","volume":"41 1","pages":"126480H - 126480H-8"},"PeriodicalIF":0.0,"publicationDate":"2023-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91043592","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}
G. S. Sánchez Guerrero, P. V. Viera González, Edgar Martinez Guerra, K. Acuña Askar, Rodolfo Cortés Martínez
Wastewater quality monitoring is essential as an effective pandemic management tool. Domestic water is one of the leading causes of wastewater pollution. Domestic water originates from urban centers and contains substances from human activity consisting of organic matter such as food remains, feces, oils, detergents, and soaps. Different ways of sensing are used to maintain the water quality, like pH, conductivity, and turbidity sensors. Alternative methods are optical sensors because these offer great potential for wastewater monitoring, allowing massive, easy and low-cost acquisitions of a wide range of measures in real-time, at any flow conditions, and with high spatial resolution. Plasmonic sensors are optical sensors used for detection, which could realize rapid recognition, real-time analysis, and sensitive and selecting sensing. These devices exploit the interaction of light with matter using the SPR as a method based on the optoelectronic phenomenon. When light hits a metal surface (typically a gold surface) at a certain angle, part of the light energy pairs through the metal coating with the electrons in the metal surface layer, which then move due to excitation, called surface plasmon resonance. We use the Kretschmann configuration and the matrix transfer method to analyze the performance numerically to achieve the optime parameters of design for the sensor’s performance. In this work, we design and build a plasmonic sensor for house wastewater monitoring by tracking contaminants along a continuous flow of artisanal water.
{"title":"Plasmonic sensor for house wastewater monitoring","authors":"G. S. Sánchez Guerrero, P. V. Viera González, Edgar Martinez Guerra, K. Acuña Askar, Rodolfo Cortés Martínez","doi":"10.1117/12.2676086","DOIUrl":"https://doi.org/10.1117/12.2676086","url":null,"abstract":"Wastewater quality monitoring is essential as an effective pandemic management tool. Domestic water is one of the leading causes of wastewater pollution. Domestic water originates from urban centers and contains substances from human activity consisting of organic matter such as food remains, feces, oils, detergents, and soaps. Different ways of sensing are used to maintain the water quality, like pH, conductivity, and turbidity sensors. Alternative methods are optical sensors because these offer great potential for wastewater monitoring, allowing massive, easy and low-cost acquisitions of a wide range of measures in real-time, at any flow conditions, and with high spatial resolution. Plasmonic sensors are optical sensors used for detection, which could realize rapid recognition, real-time analysis, and sensitive and selecting sensing. These devices exploit the interaction of light with matter using the SPR as a method based on the optoelectronic phenomenon. When light hits a metal surface (typically a gold surface) at a certain angle, part of the light energy pairs through the metal coating with the electrons in the metal surface layer, which then move due to excitation, called surface plasmon resonance. We use the Kretschmann configuration and the matrix transfer method to analyze the performance numerically to achieve the optime parameters of design for the sensor’s performance. In this work, we design and build a plasmonic sensor for house wastewater monitoring by tracking contaminants along a continuous flow of artisanal water.","PeriodicalId":13820,"journal":{"name":"International Conference on Nanoscience, Engineering and Technology (ICONSET 2011)","volume":"11 1","pages":"126480A - 126480A-6"},"PeriodicalIF":0.0,"publicationDate":"2023-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87323487","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}
High-performance semiconductors for optoelectronic device applications based on hybrid perovskites have been extensively investigated by the research community. However, their degradability and toxicity problem is a serious challenge that should be addressed effectively. Nowadays, double perovskites have been introduced as a promising lead-free alternative which is a combination of two single perovskites in which lead is replaced by monovalent and trivalent cation. Herein, we have chemically prepared a promising, stable, and novel organic-inorganic hybrid lead-free methyl ammonium (MA) based double perovskite material MA2AgBiCl6 by one-pot hydrothermal method. Structural characterization using x-ray diffraction (XRD) experiment confirms the formation of the orthorhombic crystalline phase of MA2AgBiCl6. Further, the examination of the Ultra-violet (UV-vis) spectroscopy characterization of MA2AgBiCl6 affirms the excellent absorbance behavior with a direct and indirect bandgap of 3.58 eV and 2.8 eV respectively. To investigate the optical characteristics of MA2AgBiCl6, photoluminescence (PL) spectroscopy experiment was performed and it is found that the material is reflecting good photoluminescence nature having a sharp peak at 320 nm which occur due to the band to band transition and carrier recombination of phonons. Furthermore, we performed a scanning electron microscopy (SEM) experiment on synthesized material to see its surface properties and we have observed the uniform nanotubes like fine and dense structure. Also, the Fourier transform infrared (FTIR) spectroscopy measurement reflect the transmittance nature of the prepared material. This detailed investigation on novel double perovskite MA2AgBiCl6 opens a new window for the emerging category of halide-based double perovskites for their possible utility in photovoltaics.
{"title":"Investigation of electronic and optical behavior of Ag-based novel double perovskite MA2AgBiCl6 for photovoltaic applications","authors":"Neelu Neelu, Nivedita Pandey, S. Chakrabarti","doi":"10.1117/12.2677992","DOIUrl":"https://doi.org/10.1117/12.2677992","url":null,"abstract":"High-performance semiconductors for optoelectronic device applications based on hybrid perovskites have been extensively investigated by the research community. However, their degradability and toxicity problem is a serious challenge that should be addressed effectively. Nowadays, double perovskites have been introduced as a promising lead-free alternative which is a combination of two single perovskites in which lead is replaced by monovalent and trivalent cation. Herein, we have chemically prepared a promising, stable, and novel organic-inorganic hybrid lead-free methyl ammonium (MA) based double perovskite material MA2AgBiCl6 by one-pot hydrothermal method. Structural characterization using x-ray diffraction (XRD) experiment confirms the formation of the orthorhombic crystalline phase of MA2AgBiCl6. Further, the examination of the Ultra-violet (UV-vis) spectroscopy characterization of MA2AgBiCl6 affirms the excellent absorbance behavior with a direct and indirect bandgap of 3.58 eV and 2.8 eV respectively. To investigate the optical characteristics of MA2AgBiCl6, photoluminescence (PL) spectroscopy experiment was performed and it is found that the material is reflecting good photoluminescence nature having a sharp peak at 320 nm which occur due to the band to band transition and carrier recombination of phonons. Furthermore, we performed a scanning electron microscopy (SEM) experiment on synthesized material to see its surface properties and we have observed the uniform nanotubes like fine and dense structure. Also, the Fourier transform infrared (FTIR) spectroscopy measurement reflect the transmittance nature of the prepared material. This detailed investigation on novel double perovskite MA2AgBiCl6 opens a new window for the emerging category of halide-based double perovskites for their possible utility in photovoltaics.","PeriodicalId":13820,"journal":{"name":"International Conference on Nanoscience, Engineering and Technology (ICONSET 2011)","volume":"75 1","pages":"126510D - 126510D-10"},"PeriodicalIF":0.0,"publicationDate":"2023-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90535011","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}
Veronica Gomez Godinez, Steven Zheng, Matthew Hsin-De Tran, Chengbiao Wu, Linda Z. Shi
Neuronal responses to injury are of interest to the development of methods to mitigate damage and stimulate repair. We utilized a single pulse from a 1030nm laser to create a laser induced shockwave (LIS) to subject neuronal cells to injury and compare the effects of injury on neurons from an Alzheimer’s Disease (AD) mouse model and wild type (WT) mice. We found differences in the calcium response to LIS in AD versus WT neurons. Additionally, we found that LIS induced cell death led to a calcium elevation which differed from that in cells that stayed alive. Therefore, the calcium response can be utilized to separate dead cells from live cells.
{"title":"Effects of laser induced shockwave on neurons from an Alzheimer’s mouse model","authors":"Veronica Gomez Godinez, Steven Zheng, Matthew Hsin-De Tran, Chengbiao Wu, Linda Z. Shi","doi":"10.1117/12.2677546","DOIUrl":"https://doi.org/10.1117/12.2677546","url":null,"abstract":"Neuronal responses to injury are of interest to the development of methods to mitigate damage and stimulate repair. We utilized a single pulse from a 1030nm laser to create a laser induced shockwave (LIS) to subject neuronal cells to injury and compare the effects of injury on neurons from an Alzheimer’s Disease (AD) mouse model and wild type (WT) mice. We found differences in the calcium response to LIS in AD versus WT neurons. Additionally, we found that LIS induced cell death led to a calcium elevation which differed from that in cells that stayed alive. Therefore, the calcium response can be utilized to separate dead cells from live cells.","PeriodicalId":13820,"journal":{"name":"International Conference on Nanoscience, Engineering and Technology (ICONSET 2011)","volume":"48 1","pages":"126490U - 126490U-5"},"PeriodicalIF":0.0,"publicationDate":"2023-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87568056","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}
Md. Tanvir Emrose, Emily L. Payne, Chenglong You, G. Veronis
We introduce multilayer structures with the phase-change material germanium-antimony-tellurium (GST) for use as broadband switchable absorbers in the infrared wavelength range. We use a memetic optimization algorithm coupled with the transfer-matrix method to optimize both the material composition and the layer thicknesses of the multilayer structures. We show that in the optimized structures near perfect absorption can be switched to very low absorption in a broad wavelength range by switching GST from its crystalline to its amorphous phase. Our results could pave the way to a new class of broadband switchable absorbers and thermal sources in the infrared wavelength range.
{"title":"Multilayer broadband switchable absorbers based on phase-change materials","authors":"Md. Tanvir Emrose, Emily L. Payne, Chenglong You, G. Veronis","doi":"10.1117/12.2677847","DOIUrl":"https://doi.org/10.1117/12.2677847","url":null,"abstract":"We introduce multilayer structures with the phase-change material germanium-antimony-tellurium (GST) for use as broadband switchable absorbers in the infrared wavelength range. We use a memetic optimization algorithm coupled with the transfer-matrix method to optimize both the material composition and the layer thicknesses of the multilayer structures. We show that in the optimized structures near perfect absorption can be switched to very low absorption in a broad wavelength range by switching GST from its crystalline to its amorphous phase. Our results could pave the way to a new class of broadband switchable absorbers and thermal sources in the infrared wavelength range.","PeriodicalId":13820,"journal":{"name":"International Conference on Nanoscience, Engineering and Technology (ICONSET 2011)","volume":"17 1","pages":"126470M - 126470M-3"},"PeriodicalIF":0.0,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79800735","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 paper, we propose an advanced method to jointly optimize doublet metalens and deep learning-based postprocessing networks for wide-angle and full-color imaging with high fidelity. The optical image formation module in the spatially-variant system and a reconstruction network module are implemented in a differentiable manner. By premitigating coma aberration with doublet metalens, the proposed model outperforms both cases of singlet structure and analogous electronic implementations in terms of reconstruction accuracy.
{"title":"End-to-end optimization of meta-lens doublet for high-quality wide-angle imaging","authors":"Yeong-Su Park, Byoungho Lee, Yoonchan Jeong","doi":"10.1117/12.2677367","DOIUrl":"https://doi.org/10.1117/12.2677367","url":null,"abstract":"In this paper, we propose an advanced method to jointly optimize doublet metalens and deep learning-based postprocessing networks for wide-angle and full-color imaging with high fidelity. The optical image formation module in the spatially-variant system and a reconstruction network module are implemented in a differentiable manner. By premitigating coma aberration with doublet metalens, the proposed model outperforms both cases of singlet structure and analogous electronic implementations in terms of reconstruction accuracy.","PeriodicalId":13820,"journal":{"name":"International Conference on Nanoscience, Engineering and Technology (ICONSET 2011)","volume":"917 1","pages":"126460D - 126460D-3"},"PeriodicalIF":0.0,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73042072","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}
Ivan F. Bedoya-Trujillo, A. Herrera-Rodríguez, Sebastian Pérez-Bedoya, Natalia Brizuela-Colmenares, J. Zárate-Medina, J. Muñoz-Saldaña
Thermochemical degradation of thermal barrier coatings generated by the infiltration of siliceous debris at high temperatures is considered a serious threat by aircraft industry due to phase destabilization of the thermal barrier material induces changes on its properties. Most materials-based strategies to mitigate the infiltration aim to promote the reactive crystallization of phases such as apatite. In this work, 2D Raman spectroscopy was carried out over the cross sections of lanthanum-gadolinium zirconate ceramic samples infiltrated by Colima and Popocatepetl volcanic ashes at 1250 °C for 10 h to identify the phases reprecipitated after infiltration. Raman mappings showed the characteristic peaks and the distribution of reprecipitated phases such as rare-earth apatite, monoclic and tetragonal zirconia. Additionally, rare-earth zirconate ceramics were identified by the characteristic F2g band of the pyrochlore structure. At the reaction layer, two zones were observed. Zirconia phases reprecipitating right at the upper zone while rare-earth apatite reprecipitating at the lower zone. For apatite, the peak corresponding to stretching vibrations of Si-O tetrahedra shows shifting to higher wavenumber values as gadolinium content increases in the rare-earth zirconate infiltrated. The 2D Raman spectroscopy was very effective to observe the distribution of the reprecipitated phases in addition to correlate the influence of gadolinium in the formed apatite. A correlation between infiltration depth and bands were confirmed.
{"title":"Phase identification on infiltrated thermal barrier materials by 2D Raman spectroscopy","authors":"Ivan F. Bedoya-Trujillo, A. Herrera-Rodríguez, Sebastian Pérez-Bedoya, Natalia Brizuela-Colmenares, J. Zárate-Medina, J. Muñoz-Saldaña","doi":"10.1117/12.2677550","DOIUrl":"https://doi.org/10.1117/12.2677550","url":null,"abstract":"Thermochemical degradation of thermal barrier coatings generated by the infiltration of siliceous debris at high temperatures is considered a serious threat by aircraft industry due to phase destabilization of the thermal barrier material induces changes on its properties. Most materials-based strategies to mitigate the infiltration aim to promote the reactive crystallization of phases such as apatite. In this work, 2D Raman spectroscopy was carried out over the cross sections of lanthanum-gadolinium zirconate ceramic samples infiltrated by Colima and Popocatepetl volcanic ashes at 1250 °C for 10 h to identify the phases reprecipitated after infiltration. Raman mappings showed the characteristic peaks and the distribution of reprecipitated phases such as rare-earth apatite, monoclic and tetragonal zirconia. Additionally, rare-earth zirconate ceramics were identified by the characteristic F2g band of the pyrochlore structure. At the reaction layer, two zones were observed. Zirconia phases reprecipitating right at the upper zone while rare-earth apatite reprecipitating at the lower zone. For apatite, the peak corresponding to stretching vibrations of Si-O tetrahedra shows shifting to higher wavenumber values as gadolinium content increases in the rare-earth zirconate infiltrated. The 2D Raman spectroscopy was very effective to observe the distribution of the reprecipitated phases in addition to correlate the influence of gadolinium in the formed apatite. A correlation between infiltration depth and bands were confirmed.","PeriodicalId":13820,"journal":{"name":"International Conference on Nanoscience, Engineering and Technology (ICONSET 2011)","volume":"1 1","pages":"126540A - 126540A-5"},"PeriodicalIF":0.0,"publicationDate":"2023-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88607091","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}
Shuin Jian Wu, Y. Ho, Isa Ahmadalidokht, G. Eda, Alexander Ling
Guo et al, 2023, report that NbOCl2 is a novel thin-material SPDC source, but further optical measurements on thicker samples of the material suggest that NbOCl2 does not behave like conventional SPDC producing materials. In this paper, we report the following: (1) NbOCl2 is not completely transparent at the reported pump wavelength of 404 nm, (2) NbOCl2 behaves as a polarizer at 405 nm, (3) coincidences above noise level around 810 nm were obtained when pumping NbOCl2 at 405 nm and varied with pump polarization, and (4) pumping at the more transparent wavelength of 780 nm fails to yield any detectable SPDC photon pairs.
{"title":"Optical anisotropy of NbOCl2","authors":"Shuin Jian Wu, Y. Ho, Isa Ahmadalidokht, G. Eda, Alexander Ling","doi":"10.1117/12.2680985","DOIUrl":"https://doi.org/10.1117/12.2680985","url":null,"abstract":"Guo et al, 2023, report that NbOCl2 is a novel thin-material SPDC source, but further optical measurements on thicker samples of the material suggest that NbOCl2 does not behave like conventional SPDC producing materials. In this paper, we report the following: (1) NbOCl2 is not completely transparent at the reported pump wavelength of 404 nm, (2) NbOCl2 behaves as a polarizer at 405 nm, (3) coincidences above noise level around 810 nm were obtained when pumping NbOCl2 at 405 nm and varied with pump polarization, and (4) pumping at the more transparent wavelength of 780 nm fails to yield any detectable SPDC photon pairs.","PeriodicalId":13820,"journal":{"name":"International Conference on Nanoscience, Engineering and Technology (ICONSET 2011)","volume":"157 1","pages":"126530M - 126530M-4"},"PeriodicalIF":0.0,"publicationDate":"2023-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83320521","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}
We demonstrate a novel approach to designing a distributed Bragg reflector consisting of a complex-index material (i.e., gold and VO2). The design with a gold center layer has been fabricated and characterized. The field enhancement is used to reduce the optical limiting threshold and increase nonlinearity.
{"title":"Deposition and characterization of distributed Bragg feedback resonant-cavities with complex index active layers","authors":"Angelica Drees, Peter R. Stevensen, A. Sarangan","doi":"10.1117/12.2681693","DOIUrl":"https://doi.org/10.1117/12.2681693","url":null,"abstract":"We demonstrate a novel approach to designing a distributed Bragg reflector consisting of a complex-index material (i.e., gold and VO2). The design with a gold center layer has been fabricated and characterized. The field enhancement is used to reduce the optical limiting threshold and increase nonlinearity.","PeriodicalId":13820,"journal":{"name":"International Conference on Nanoscience, Engineering and Technology (ICONSET 2011)","volume":"48 1","pages":"126530L - 126530L-4"},"PeriodicalIF":0.0,"publicationDate":"2023-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76333619","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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