Pub Date : 2023-05-04DOI: 10.1080/09500340.2023.2273561
Yufeng Yang, Mengjie Shangguan
In this study, a two-parameter inversion model is used to improve the accuracy of seawater temperature and salinity inversion. Furthermore, a novel model is proposed to invert the seawater sound velocity, using Brillouin frequency shift and linewidth as independent variables to establish their relationship with the sound velocity. The temperature, salinity, and depth data of the East China Sea collected from the World Ocean Atlas 2018 were used to simulate the seawater sound velocity in the range of 0–100 m at different longitudes and latitudes in different seasons. The results indicate that the simultaneous inversion of the three parameters can be realized using the Brillouin frequency shift and linewidth. The maximum errors of the temperature, salinity, and sound velocity for the inversion model were 0.079 °C, 0.122 ‰, and 0.124 m/s, with relative errors of 0.212, 0.156, and 0.015%, respectively.
{"title":"Inversion of seawater temperature, salinity, and sound velocity based on Brillouin lidar","authors":"Yufeng Yang, Mengjie Shangguan","doi":"10.1080/09500340.2023.2273561","DOIUrl":"https://doi.org/10.1080/09500340.2023.2273561","url":null,"abstract":"In this study, a two-parameter inversion model is used to improve the accuracy of seawater temperature and salinity inversion. Furthermore, a novel model is proposed to invert the seawater sound velocity, using Brillouin frequency shift and linewidth as independent variables to establish their relationship with the sound velocity. The temperature, salinity, and depth data of the East China Sea collected from the World Ocean Atlas 2018 were used to simulate the seawater sound velocity in the range of 0–100 m at different longitudes and latitudes in different seasons. The results indicate that the simultaneous inversion of the three parameters can be realized using the Brillouin frequency shift and linewidth. The maximum errors of the temperature, salinity, and sound velocity for the inversion model were 0.079 °C, 0.122 ‰, and 0.124 m/s, with relative errors of 0.212, 0.156, and 0.015%, respectively.","PeriodicalId":16426,"journal":{"name":"Journal of Modern Optics","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135011476","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-04DOI: 10.1080/09500340.2023.2266065
Xin Meng, Shifeng Wang, Peng Zhang, Feng Qian, Jun Ma, Jin Meng, Kaiyue Du, Bo Lu, Shigeng Song
AbstractThe binary defocusing has been extensively studied in the three-dimensional measurement. But if the projector is slightly defocused, the binary fringes after defocusing still contain high-order harmonics compared with the ideal sinusoidal fringes, so the phase error caused by the nonlinear response is not negligible. In this paper, two models are proposed to calculate and compensate phase error, which include a double-precision iterative compensation model (DPICM) and a dual-domain iterative compensation model (DDICM). These two models obtain accurate phase errors by fusing the phases at different precision and domains. DPICM is composed of the double precision method and the improved iterative algorithm, and DDICM consists of the dual-domain method and the improved iterative algorithm. This improved iterative algorithm is used to compensate phase error, which can improve phase accuracy. DPICM and DDICM reduce the RMS error by 25.5% and 13.5% respectively.KEYWORDS: Three-dimensional shape measurementphase error compensationiteration algorithmphase shifting profilometry Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work is supported by International Cooperation Foundation of 10.13039/501100003807 Jilin Province (Grant Nos. 20210402074GH) and the 111 Project of China (Grant Nos. D21009 and D17017).
{"title":"A phase error compensation method for three-dimensional shape measurement using improved iteration algorithm","authors":"Xin Meng, Shifeng Wang, Peng Zhang, Feng Qian, Jun Ma, Jin Meng, Kaiyue Du, Bo Lu, Shigeng Song","doi":"10.1080/09500340.2023.2266065","DOIUrl":"https://doi.org/10.1080/09500340.2023.2266065","url":null,"abstract":"AbstractThe binary defocusing has been extensively studied in the three-dimensional measurement. But if the projector is slightly defocused, the binary fringes after defocusing still contain high-order harmonics compared with the ideal sinusoidal fringes, so the phase error caused by the nonlinear response is not negligible. In this paper, two models are proposed to calculate and compensate phase error, which include a double-precision iterative compensation model (DPICM) and a dual-domain iterative compensation model (DDICM). These two models obtain accurate phase errors by fusing the phases at different precision and domains. DPICM is composed of the double precision method and the improved iterative algorithm, and DDICM consists of the dual-domain method and the improved iterative algorithm. This improved iterative algorithm is used to compensate phase error, which can improve phase accuracy. DPICM and DDICM reduce the RMS error by 25.5% and 13.5% respectively.KEYWORDS: Three-dimensional shape measurementphase error compensationiteration algorithmphase shifting profilometry Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work is supported by International Cooperation Foundation of 10.13039/501100003807 Jilin Province (Grant Nos. 20210402074GH) and the 111 Project of China (Grant Nos. D21009 and D17017).","PeriodicalId":16426,"journal":{"name":"Journal of Modern Optics","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135011595","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-16DOI: 10.1080/09500340.2023.2266043
Jiang Zhu, Daqiang Hu, Ying Wang, Chunlei Tao, Jian Liu
AbstractThe crater-nanorod-like double-textured ZnO:Al (AZO) transparent conducting films were prepared by combining wet-etching AZO seed layers and hydrothermal growing AZO nanorods. Different morphologies of the nanorod-like structures determined by the etching time of seed layers were observed. The influence of AZO seed layers etched for different times on the properties of double-textured AZO films was systematically compared and investigated, such as the structures, morphologies, optoelectronic properties and light-trapping abilities. The relationship between morphologies and light-trapping abilities of AZO nanorod-like structures grown on the etched seed layers was discussed. The crater-nanorod-like structures of double-textured AZO films with seed layers etched for 15 min not only maintained low resistance and high transmittance but also exhibited higher haze value, which are effective double-textured structures for improving light trapping.KEYWORDS: ZnOtransparent conducting filmslight trappingdouble-texturedoptoelectronic properties Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work was supported by the Opened Fund of the State Key Laboratory of Integrated Optoelectronics, China (grant number IOSKL2020KF15), the Natural Science Foundation of Liaoning Province, China (grant number 2019-ZD-0268).
{"title":"Improving light trapping abilities of double-textured AZO films via etching seed layers","authors":"Jiang Zhu, Daqiang Hu, Ying Wang, Chunlei Tao, Jian Liu","doi":"10.1080/09500340.2023.2266043","DOIUrl":"https://doi.org/10.1080/09500340.2023.2266043","url":null,"abstract":"AbstractThe crater-nanorod-like double-textured ZnO:Al (AZO) transparent conducting films were prepared by combining wet-etching AZO seed layers and hydrothermal growing AZO nanorods. Different morphologies of the nanorod-like structures determined by the etching time of seed layers were observed. The influence of AZO seed layers etched for different times on the properties of double-textured AZO films was systematically compared and investigated, such as the structures, morphologies, optoelectronic properties and light-trapping abilities. The relationship between morphologies and light-trapping abilities of AZO nanorod-like structures grown on the etched seed layers was discussed. The crater-nanorod-like structures of double-textured AZO films with seed layers etched for 15 min not only maintained low resistance and high transmittance but also exhibited higher haze value, which are effective double-textured structures for improving light trapping.KEYWORDS: ZnOtransparent conducting filmslight trappingdouble-texturedoptoelectronic properties Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work was supported by the Opened Fund of the State Key Laboratory of Integrated Optoelectronics, China (grant number IOSKL2020KF15), the Natural Science Foundation of Liaoning Province, China (grant number 2019-ZD-0268).","PeriodicalId":16426,"journal":{"name":"Journal of Modern Optics","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136272886","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-16DOI: 10.1080/09500340.2023.2266062
Linli Sun
AbstractThe shadowing and masking of a rough surface is an important problem for reflection models in computer graphics. The widely used Smith’s geometry attenuation factor (GAF) takes a few factors such as root-mean-square (rms) into account and makes too many assumptions. In our research, we construct a brand-new calculation technique for issues involving light attenuation on a rough surface. The GAF algorithm is derived from a scattering field based on integral equations and the computational electromagnetic method. Specifically, our use of the method of moments has enabled us to tackle the problem of analytically computing the shadowing and masking on a rough surface by taking practical factors such as wavelength, surface contour, polarization, material, rms, and so on into consideration. It is more precise than Smith’s GAF theory.KEYWORDS: Light attenuationmicrofacet theorymasking and shadowingSmith’s theorythe method of momentscomputational electromagnetic method AcknowledgmentsThe authors would like to sincerely thank all reviewers for their helpful comments and suggestions.Disclosure statementNo potential conflict of interest was reported by the authors.Additional informationFundingThis work was supported by Natural Science Foundation of Shaanxi Province of China (2022JM-385).
{"title":"Light attenuation analysis based on integral equations","authors":"Linli Sun","doi":"10.1080/09500340.2023.2266062","DOIUrl":"https://doi.org/10.1080/09500340.2023.2266062","url":null,"abstract":"AbstractThe shadowing and masking of a rough surface is an important problem for reflection models in computer graphics. The widely used Smith’s geometry attenuation factor (GAF) takes a few factors such as root-mean-square (rms) into account and makes too many assumptions. In our research, we construct a brand-new calculation technique for issues involving light attenuation on a rough surface. The GAF algorithm is derived from a scattering field based on integral equations and the computational electromagnetic method. Specifically, our use of the method of moments has enabled us to tackle the problem of analytically computing the shadowing and masking on a rough surface by taking practical factors such as wavelength, surface contour, polarization, material, rms, and so on into consideration. It is more precise than Smith’s GAF theory.KEYWORDS: Light attenuationmicrofacet theorymasking and shadowingSmith’s theorythe method of momentscomputational electromagnetic method AcknowledgmentsThe authors would like to sincerely thank all reviewers for their helpful comments and suggestions.Disclosure statementNo potential conflict of interest was reported by the authors.Additional informationFundingThis work was supported by Natural Science Foundation of Shaanxi Province of China (2022JM-385).","PeriodicalId":16426,"journal":{"name":"Journal of Modern Optics","volume":"444 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136272883","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-16DOI: 10.1080/09500340.2023.2266061
Tao Liu, Jiaqi Hu, Tao He, Qiang Liu, Shanshan Chen, Shuming Yang, Guodong Zhang, Guanghua Cheng
AbstractPupil filtering is an effective method to modulate the 3D point spread function distribution of an optical system. Based on vector Debye-Wolf diffraction integral and a new fusion optimization algorithm, an improved method is described for efficiently designing the most widely-used concentric multi-belt pupil filters. The main advantage of this method is that it actively selects the minimum belt width and the total belt number for facilitating low-cost batch processing. Pupil filters for visible and near-infrared bands have been separately designed for improving the spatial resolution of optical imaging and ultrafast laser processing. The method has been experimentally demonstrated for suppressing the optical focal spot. The proposed method can be readily modified for designing more sophisticated multi-level pupil filters for practical applications in high-resolution imaging and fine laser micromachining.KEYWORDS: Pupil filtervector diffractionoptimizationlaser micromachining Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work was supported by the National Key Research and Development Program of China [grant No. 2023YFE0203800], Key Research and Development Program of Shaanxi Province [grant No. 2021ZDLGY12-06], Fundamental Research Funds for the Central Universities of China [grant No. XZD012022068], Shaanxi Provincial Department of Education Scientific Research Project [grant No. 22JK0313], Shaanxi University of Technology Science Foundation [grant No. SLGRCQD2132] and National Natural Science Foundation of China [grant No. 52105481].
{"title":"Improved design method for suppressing optical focal spots and experimental verification","authors":"Tao Liu, Jiaqi Hu, Tao He, Qiang Liu, Shanshan Chen, Shuming Yang, Guodong Zhang, Guanghua Cheng","doi":"10.1080/09500340.2023.2266061","DOIUrl":"https://doi.org/10.1080/09500340.2023.2266061","url":null,"abstract":"AbstractPupil filtering is an effective method to modulate the 3D point spread function distribution of an optical system. Based on vector Debye-Wolf diffraction integral and a new fusion optimization algorithm, an improved method is described for efficiently designing the most widely-used concentric multi-belt pupil filters. The main advantage of this method is that it actively selects the minimum belt width and the total belt number for facilitating low-cost batch processing. Pupil filters for visible and near-infrared bands have been separately designed for improving the spatial resolution of optical imaging and ultrafast laser processing. The method has been experimentally demonstrated for suppressing the optical focal spot. The proposed method can be readily modified for designing more sophisticated multi-level pupil filters for practical applications in high-resolution imaging and fine laser micromachining.KEYWORDS: Pupil filtervector diffractionoptimizationlaser micromachining Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work was supported by the National Key Research and Development Program of China [grant No. 2023YFE0203800], Key Research and Development Program of Shaanxi Province [grant No. 2021ZDLGY12-06], Fundamental Research Funds for the Central Universities of China [grant No. XZD012022068], Shaanxi Provincial Department of Education Scientific Research Project [grant No. 22JK0313], Shaanxi University of Technology Science Foundation [grant No. SLGRCQD2132] and National Natural Science Foundation of China [grant No. 52105481].","PeriodicalId":16426,"journal":{"name":"Journal of Modern Optics","volume":"445 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136272894","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-16DOI: 10.1080/09500340.2023.2266057
YuJuan Sun, YaWei Wang, Furui Tang, Yan Geng, YuanYuan Xu, Min Bu
AbstractTo improve the accuracy of phase recovery in quantitative phase imaging, a novel two-stage synthetic denoising method is proposed in this paper. In this method, to avoid the loss of effective detail information, the mode of fixed attenuation parameter setting is changed into two stages of self-adaptation setting: the first attenuation parameter is defined as the convolution of filtered pixels in the window of interest, the second attenuation parameter is defined as the noise standard deviation of each pixel after filtering in the first stage. Moreover, the Pearson coefficient expression is redefined to get a more accurate similarity evaluation, and the algorithm's operational efficiency has been improved using cross-correlation functions and fast Fourier transform. The comparative results of simulations and experiments show that this method is more effective in reducing speckle noise in quantitative phase imaging and enhancing phase recovery accuracy, providing a new digital image denoizing method for efficient and accurate imaging.KEYWORDS: Quantitative phase imagingefficient denoisingadaptivetwo stages process Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work was supported by the National Natural Science Foundation of China: [grant number No. 11874184].
{"title":"A two-stage synthetic non-local mean (NLM) filtering method for efficient denoising in quantitative phase imaging (QPI)","authors":"YuJuan Sun, YaWei Wang, Furui Tang, Yan Geng, YuanYuan Xu, Min Bu","doi":"10.1080/09500340.2023.2266057","DOIUrl":"https://doi.org/10.1080/09500340.2023.2266057","url":null,"abstract":"AbstractTo improve the accuracy of phase recovery in quantitative phase imaging, a novel two-stage synthetic denoising method is proposed in this paper. In this method, to avoid the loss of effective detail information, the mode of fixed attenuation parameter setting is changed into two stages of self-adaptation setting: the first attenuation parameter is defined as the convolution of filtered pixels in the window of interest, the second attenuation parameter is defined as the noise standard deviation of each pixel after filtering in the first stage. Moreover, the Pearson coefficient expression is redefined to get a more accurate similarity evaluation, and the algorithm's operational efficiency has been improved using cross-correlation functions and fast Fourier transform. The comparative results of simulations and experiments show that this method is more effective in reducing speckle noise in quantitative phase imaging and enhancing phase recovery accuracy, providing a new digital image denoizing method for efficient and accurate imaging.KEYWORDS: Quantitative phase imagingefficient denoisingadaptivetwo stages process Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work was supported by the National Natural Science Foundation of China: [grant number No. 11874184].","PeriodicalId":16426,"journal":{"name":"Journal of Modern Optics","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136272888","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
AbstractIn this study, a numerical procedure is proposed to determine the optical contact (peak of the coherence function) in a scanning white light interferential microscope. The Red, Green and Blue image of the correlogram is transformed to the Commission Internationale de l’Eclairage chromatic system with x,y,z coordinates. The key element is to track the orientation of the curve (trajectory) which exhibits changes as it passes through the optical contact. The path described by the interferogram in this chromatic space makes it possible to localize, without ambiguity, the zero-order fringe and from this information to reconstruct the topography of an object of the order of a few tens of nanometres.KEYWORDS: Scanning white light interferometryCIExyz colour systemlow-coherence interferometrycolour CCD Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingCML thanks Ministerio de Ciencia, Tecnología e Innovación (Minciencia-Colombia) for its financial support.
{"title":"Profilometry by zero-order interference fringe identification in the Commission Internationale de l’Eclairage system","authors":"Alexandra Plata Planidina, Carolina Mendoza Luna, Jáder Enrique Guerrero Bermúdez, Arturo Plata Gómez","doi":"10.1080/09500340.2023.2266049","DOIUrl":"https://doi.org/10.1080/09500340.2023.2266049","url":null,"abstract":"AbstractIn this study, a numerical procedure is proposed to determine the optical contact (peak of the coherence function) in a scanning white light interferential microscope. The Red, Green and Blue image of the correlogram is transformed to the Commission Internationale de l’Eclairage chromatic system with x,y,z coordinates. The key element is to track the orientation of the curve (trajectory) which exhibits changes as it passes through the optical contact. The path described by the interferogram in this chromatic space makes it possible to localize, without ambiguity, the zero-order fringe and from this information to reconstruct the topography of an object of the order of a few tens of nanometres.KEYWORDS: Scanning white light interferometryCIExyz colour systemlow-coherence interferometrycolour CCD Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingCML thanks Ministerio de Ciencia, Tecnología e Innovación (Minciencia-Colombia) for its financial support.","PeriodicalId":16426,"journal":{"name":"Journal of Modern Optics","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136272887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
AbstractAverage Bit Error Rate (BER), outage probability and average channel capacity expressions of a Modulating Retro-Reflector (MRR) optical communication system based on an Airy beam under weak turbulence are derived. The effects of propagation distance, width parameter and exponential truncation factor of the Airy beam itself on the communication performance of the system are discussed. Meanwhile, the performance of the system based on the Gaussian beam is compared with the same turbulence condition and propagation distance. The simulation results show that under the same conditions, the system based on the Airy beam shows a lower outage probability, average BER and larger average channel capacity compared to the system based on the Gaussian beam. Moreover, the advantages of the Airy beam are more significant as the average signal-to-noise ratio (SNR) increases.KEYWORDS: Modulating retro-reflector optical communicationAiry beamweak atmospheric turbulenceperformance analysis Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work was supported by the National Natural Science Foundation of China [62271502, 62171463, 61975238] and Natural Science Foundation of Jiangsu Province [BK20231486].
{"title":"Performance analysis of modulating retro-reflector optical communication system based on an Airy beam","authors":"Yunyi Qin, Zhiyong Xu, Jingyuan Wang, Jianhua Li, Mengtong Xie, Jiyong Zhao, Ailin Qi","doi":"10.1080/09500340.2023.2266055","DOIUrl":"https://doi.org/10.1080/09500340.2023.2266055","url":null,"abstract":"AbstractAverage Bit Error Rate (BER), outage probability and average channel capacity expressions of a Modulating Retro-Reflector (MRR) optical communication system based on an Airy beam under weak turbulence are derived. The effects of propagation distance, width parameter and exponential truncation factor of the Airy beam itself on the communication performance of the system are discussed. Meanwhile, the performance of the system based on the Gaussian beam is compared with the same turbulence condition and propagation distance. The simulation results show that under the same conditions, the system based on the Airy beam shows a lower outage probability, average BER and larger average channel capacity compared to the system based on the Gaussian beam. Moreover, the advantages of the Airy beam are more significant as the average signal-to-noise ratio (SNR) increases.KEYWORDS: Modulating retro-reflector optical communicationAiry beamweak atmospheric turbulenceperformance analysis Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work was supported by the National Natural Science Foundation of China [62271502, 62171463, 61975238] and Natural Science Foundation of Jiangsu Province [BK20231486].","PeriodicalId":16426,"journal":{"name":"Journal of Modern Optics","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136272890","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
AbstractRecently, metal halide perovskite quantum dots (MHPQDs) have attracted considerable interest in sensing activities due to their excellent optoelectronic properties and high surface activity. Here, aiming for heavy metal detection, we proposed an ultrasensitive turn-off fluorescent probe based on MAPbBr3 MHPQDs for the measurement of copper ions in an organic solvent. A low limit of detection (LOD) of 5.6nM was achieved and the test range was recorded from 0nM to 100nM. In order to achieve this high sensitivity, a thin film layer of electrospun polystyrene(PS) nanofibre was introduced for the structural support of MHPQDs, by which the sensitivity increased two orders of magnitude. The quenching mechanism is also discussed in the paper. We believe the electron transfer effect between Cu2+ and perovskite QDs made the main contribution for turn off sensing in our prototype device.KEYWORDS: MHPQDsPSElectrospunCu2+JEL CODE KEYWORDS: 71.35.-y71.35.Lk71.36.+c AcknowledgementsSizhong Yi: methodology, formal analysis, writing, original draft. Xin Zhang: writing draft, idea, review & editing, funding acquisition. Yuanhao Huang: data collection, material preparation. Jie Zou: testing system optimizing, funding acquisition. Yuheng Wang: review & editing, data analysis. Jiawen Jian: review & editing, funding acquisition. Qinghui Jin: experiment advice. Xiaowei Zhang: review & editing, funding acquisition.Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work was supported by National Natural Science Foundation of China (NSFC grant numbers 61971251, 61974078, and 61871243).
{"title":"A fluorescent probe of CH <sub>3</sub> NH <sub>3</sub> PbBr <sub>3</sub> perovskite quantum dots on polystyrene nanofibres for the detection of copper ions","authors":"Sizhong Yi, Yuanhao Huang, Jie Zou, Yuheng Wang, Jiawen Jian, Qinghui Jin, Xiaowei Zhang, Xin Zhang","doi":"10.1080/09500340.2023.2266058","DOIUrl":"https://doi.org/10.1080/09500340.2023.2266058","url":null,"abstract":"AbstractRecently, metal halide perovskite quantum dots (MHPQDs) have attracted considerable interest in sensing activities due to their excellent optoelectronic properties and high surface activity. Here, aiming for heavy metal detection, we proposed an ultrasensitive turn-off fluorescent probe based on MAPbBr3 MHPQDs for the measurement of copper ions in an organic solvent. A low limit of detection (LOD) of 5.6nM was achieved and the test range was recorded from 0nM to 100nM. In order to achieve this high sensitivity, a thin film layer of electrospun polystyrene(PS) nanofibre was introduced for the structural support of MHPQDs, by which the sensitivity increased two orders of magnitude. The quenching mechanism is also discussed in the paper. We believe the electron transfer effect between Cu2+ and perovskite QDs made the main contribution for turn off sensing in our prototype device.KEYWORDS: MHPQDsPSElectrospunCu2+JEL CODE KEYWORDS: 71.35.-y71.35.Lk71.36.+c AcknowledgementsSizhong Yi: methodology, formal analysis, writing, original draft. Xin Zhang: writing draft, idea, review & editing, funding acquisition. Yuanhao Huang: data collection, material preparation. Jie Zou: testing system optimizing, funding acquisition. Yuheng Wang: review & editing, data analysis. Jiawen Jian: review & editing, funding acquisition. Qinghui Jin: experiment advice. Xiaowei Zhang: review & editing, funding acquisition.Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work was supported by National Natural Science Foundation of China (NSFC grant numbers 61971251, 61974078, and 61871243).","PeriodicalId":16426,"journal":{"name":"Journal of Modern Optics","volume":"196 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136272891","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-03-30DOI: 10.1080/09500340.2023.2235436
Jiale Long, Jianmin Zhang, Jiangtao Xi, Yi Ding, Fujian Chen, Zihao Du
In a recent work, a technique was proposed to recover the absolute phase maps of fringe patterns with two or three selected fringe wavelengths with the aim to improve anti-error capability. To further increase the anti-error capability associated with the phase unwrapping operation, multiple fringe patterns with different wavelengths may also be used. In this paper, we present a general rule to select the wavelengths and the strategy to increase phase error tolerance bound. Based on this rule, it is concluded that to maximize the error tolerance, four-wavelength method should be selected, where the maximum upper bound of the tolerable phase error is π/6. To minimize the required number of fringe patterns, three-wavelength method with three-step PSP should be selected, that is exactly the case the previous paper has demonstrated. These theoretical conclusions are verified by experimental results.
{"title":"Absolute phase recovery with multiple-wavelength fringes","authors":"Jiale Long, Jianmin Zhang, Jiangtao Xi, Yi Ding, Fujian Chen, Zihao Du","doi":"10.1080/09500340.2023.2235436","DOIUrl":"https://doi.org/10.1080/09500340.2023.2235436","url":null,"abstract":"In a recent work, a technique was proposed to recover the absolute phase maps of fringe patterns with two or three selected fringe wavelengths with the aim to improve anti-error capability. To further increase the anti-error capability associated with the phase unwrapping operation, multiple fringe patterns with different wavelengths may also be used. In this paper, we present a general rule to select the wavelengths and the strategy to increase phase error tolerance bound. Based on this rule, it is concluded that to maximize the error tolerance, four-wavelength method should be selected, where the maximum upper bound of the tolerable phase error is π/6. To minimize the required number of fringe patterns, three-wavelength method with three-step PSP should be selected, that is exactly the case the previous paper has demonstrated. These theoretical conclusions are verified by experimental results.","PeriodicalId":16426,"journal":{"name":"Journal of Modern Optics","volume":"70 1","pages":"339 - 348"},"PeriodicalIF":1.3,"publicationDate":"2023-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45691706","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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