Pub Date : 2019-06-24DOI: 10.1364/COSI.2019.JW2A.13
V. Karitans, E. Nitiss, A. Tokmakovs
We investigate whether a wavefront can be recovered by using a single mask rotated in four different positions. Results show that PhaseLift can recover the wavefront from intensity measurements using such a kind of modulation.
{"title":"Wavefront Recovery: Shack-Hartmann Aberrometry vs PhaseLift Using a Single Binary Amplitude Modulating Mask","authors":"V. Karitans, E. Nitiss, A. Tokmakovs","doi":"10.1364/COSI.2019.JW2A.13","DOIUrl":"https://doi.org/10.1364/COSI.2019.JW2A.13","url":null,"abstract":"We investigate whether a wavefront can be recovered by using a single mask rotated in four different positions. Results show that PhaseLift can recover the wavefront from intensity measurements using such a kind of modulation.","PeriodicalId":123636,"journal":{"name":"Imaging and Applied Optics 2019 (COSI, IS, MATH, pcAOP)","volume":"211 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120887051","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}
Pub Date : 2019-06-24DOI: 10.1364/COSI.2019.JW2A.17
J. Hoyo, L. Sanchez-Brea, J. Gómez-Pedrero
We present a new method for calibrating a 4 stepper-motors polarimeter. This method does not require perfect polarizing elements or well-known samples. Experimental results have been obtained with errors lower than 0.1%.
{"title":"Self-calibrated four-axis high-precision polarimeter","authors":"J. Hoyo, L. Sanchez-Brea, J. Gómez-Pedrero","doi":"10.1364/COSI.2019.JW2A.17","DOIUrl":"https://doi.org/10.1364/COSI.2019.JW2A.17","url":null,"abstract":"We present a new method for calibrating a 4 stepper-motors polarimeter. This method does not require perfect polarizing elements or well-known samples. Experimental results have been obtained with errors lower than 0.1%.","PeriodicalId":123636,"journal":{"name":"Imaging and Applied Optics 2019 (COSI, IS, MATH, pcAOP)","volume":"171 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116415625","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}
Pub Date : 2019-06-24DOI: 10.1364/COSI.2019.CTU3A.5
A. Turpin
We report a technique based in machine learning to control the delivery of light through complex media, including through multimode fibers, thus opening the door to spatial division multiplexing and endoscopy with multimode fibers.
{"title":"Projecting light through complex media with machine learning","authors":"A. Turpin","doi":"10.1364/COSI.2019.CTU3A.5","DOIUrl":"https://doi.org/10.1364/COSI.2019.CTU3A.5","url":null,"abstract":"We report a technique based in machine learning to control the delivery of light through complex media, including through multimode fibers, thus opening the door to spatial division multiplexing and endoscopy with multimode fibers.","PeriodicalId":123636,"journal":{"name":"Imaging and Applied Optics 2019 (COSI, IS, MATH, pcAOP)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126819181","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}
Pub Date : 2019-06-24DOI: 10.1364/COSI.2019.CW3A.6
M. Tanksalvala, Christina L. Porter, Yuka Esashi, Galen P. Miley, N. Horiguchi, Robert M. Karl, Peter C Johnsen, C. Bevis, N. Jenkins, Bin Wang, Xiaoshi Zhang, S. Cousin, D. Adams, M. Gerrity, H. Kapteyn, M. Murnane
We present a tabletop-scale complex-imaging EUV reflectometer that uses grazing- incidence ptychographic imaging to non-destructively determine depth-dependent, spatially-resolved composition with high sensitivity to chemical makeup, thin film layer thickness, interface quality and dopant profiles.
{"title":"Complex Imaging Reflectometry for Dopant Profile Measurements using Tabletop High Harmonic Light","authors":"M. Tanksalvala, Christina L. Porter, Yuka Esashi, Galen P. Miley, N. Horiguchi, Robert M. Karl, Peter C Johnsen, C. Bevis, N. Jenkins, Bin Wang, Xiaoshi Zhang, S. Cousin, D. Adams, M. Gerrity, H. Kapteyn, M. Murnane","doi":"10.1364/COSI.2019.CW3A.6","DOIUrl":"https://doi.org/10.1364/COSI.2019.CW3A.6","url":null,"abstract":"We present a tabletop-scale complex-imaging EUV reflectometer that uses grazing- incidence ptychographic imaging to non-destructively determine depth-dependent, spatially-resolved composition with high sensitivity to chemical makeup, thin film layer thickness, interface quality and dopant profiles.","PeriodicalId":123636,"journal":{"name":"Imaging and Applied Optics 2019 (COSI, IS, MATH, pcAOP)","volume":"208 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128410074","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}
Pub Date : 2019-06-24DOI: 10.1364/COSI.2019.JW2A.44
V. Ezhov, P. Ivashkin
Amplitude-polarization imager (API) along with static phase-polarization parallax barrier (PPPB) allow implementing autostereoscopic imaging with full-screen resolution in each view. Additional amplitude static filtering eliminates crosstalk in the gaps between the API and PPPB columns.
{"title":"Amplitude Static Filtering in Autostereoscopic Imaging Layout Based on Amplitude-Polarization Imager and Phase-Polarization Parallax Barrier","authors":"V. Ezhov, P. Ivashkin","doi":"10.1364/COSI.2019.JW2A.44","DOIUrl":"https://doi.org/10.1364/COSI.2019.JW2A.44","url":null,"abstract":"Amplitude-polarization imager (API) along with static phase-polarization parallax barrier (PPPB) allow implementing autostereoscopic imaging with full-screen resolution in each view. Additional amplitude static filtering eliminates crosstalk in the gaps between the API and PPPB columns.","PeriodicalId":123636,"journal":{"name":"Imaging and Applied Optics 2019 (COSI, IS, MATH, pcAOP)","volume":"92 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133609989","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}
Pub Date : 2019-06-24DOI: 10.1364/COSI.2019.CTH3A.3
Oğuzhan Fatih Kar, F. Oktem
We develop a fast computational spectral imaging modality that utilizes a single programmable diffractive lens. The proposed optical configuration is simple and provides promising reconstruction performance for the three-dimensional spectral data cube.
{"title":"Fast Computational Spectral Imaging with a Programmable Diffractive Lens","authors":"Oğuzhan Fatih Kar, F. Oktem","doi":"10.1364/COSI.2019.CTH3A.3","DOIUrl":"https://doi.org/10.1364/COSI.2019.CTH3A.3","url":null,"abstract":"We develop a fast computational spectral imaging modality that utilizes a single programmable diffractive lens. The proposed optical configuration is simple and provides promising reconstruction performance for the three-dimensional spectral data cube.","PeriodicalId":123636,"journal":{"name":"Imaging and Applied Optics 2019 (COSI, IS, MATH, pcAOP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131203381","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}
Pub Date : 2019-06-24DOI: 10.1364/COSI.2019.JW2A.42
Longfei Wu, Pei-Jen Wang, Yuan-Chieh Cheng
To verify the image quality of freeform lenses, Shack Hartmann wavefront measurement system plus MTF based Fourier optical system are employed for analysis of wavefront aberrations of the lenses.
{"title":"Aberration analysis and measurement of micro-offset free-form mirrors","authors":"Longfei Wu, Pei-Jen Wang, Yuan-Chieh Cheng","doi":"10.1364/COSI.2019.JW2A.42","DOIUrl":"https://doi.org/10.1364/COSI.2019.JW2A.42","url":null,"abstract":"To verify the image quality of freeform lenses, Shack Hartmann wavefront measurement system plus MTF based Fourier optical system are employed for analysis of wavefront aberrations of the lenses.","PeriodicalId":123636,"journal":{"name":"Imaging and Applied Optics 2019 (COSI, IS, MATH, pcAOP)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134316880","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}
Pub Date : 2019-06-24DOI: 10.1364/COSI.2019.JW2A.30
Jiang Sulin, Pan Yun, Li Qing, Lei Lianfa, L. Weitao, Zhang Yang, Wang Zhenhui
The integral of lightning current squared over time, named as the “lightning action integral”, is an indicator of Joule heat generated by lightning discharge. The temperature of air molecules is thus increased, which can be observed by a ground-based microwave radiometer for atmospheric temperature remote sensing. Observational experiments were performed in early summer in 2017 with a ground-based, MWP967KV type microwave radiometer, which is commonly used for atmospheric temperature profile remote sensing but has been properly-configured this study in order to observe the artificially triggered lightning events at Guangzhou field experiment site for lightning research and test (GFESL). Data from the radiometer and the instrument for recording lightning current have been analyzed and the results from 7 effective events show that a relationship like ΔTB=exp(aX) may exist between the brightness temperature increment, ΔTB, in unit of K, observed in 30-50GHz band and the lightning action integral, X, in unit of A2s, calculated from high temporal resolution lightning current records. The correlation coefficient is as high as 0.8863 while the coefficient, a, is equal to 6.25381*10−5 (sample size = 7).
{"title":"Preliminary study on remote sensing the relationship between the brightness temperature pulses observed with a ground-based microwave radiometer and the lightning action integral*","authors":"Jiang Sulin, Pan Yun, Li Qing, Lei Lianfa, L. Weitao, Zhang Yang, Wang Zhenhui","doi":"10.1364/COSI.2019.JW2A.30","DOIUrl":"https://doi.org/10.1364/COSI.2019.JW2A.30","url":null,"abstract":"The integral of lightning current squared over time, named as the “lightning action integral”, is an indicator of Joule heat generated by lightning discharge. The temperature of air molecules is thus increased, which can be observed by a ground-based microwave radiometer for atmospheric temperature remote sensing. Observational experiments were performed in early summer in 2017 with a ground-based, MWP967KV type microwave radiometer, which is commonly used for atmospheric temperature profile remote sensing but has been properly-configured this study in order to observe the artificially triggered lightning events at Guangzhou field experiment site for lightning research and test (GFESL). Data from the radiometer and the instrument for recording lightning current have been analyzed and the results from 7 effective events show that a relationship like ΔTB=exp(aX) may exist between the brightness temperature increment, ΔTB, in unit of K, observed in 30-50GHz band and the lightning action integral, X, in unit of A2s, calculated from high temporal resolution lightning current records. The correlation coefficient is as high as 0.8863 while the coefficient, a, is equal to 6.25381*10−5 (sample size = 7).","PeriodicalId":123636,"journal":{"name":"Imaging and Applied Optics 2019 (COSI, IS, MATH, pcAOP)","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133430061","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}
Pub Date : 2019-06-24DOI: 10.1364/COSI.2019.CTH4A.3
Shay Elmalem, R. Giryes, E. Marom
Motion deblurring solution based on spatio-temporal coding is proposed. Using aperture coding and focus variations during exposure, a joint spatio-temporal coding is achieved, which is in-turn utilized for motion deblurring in the post processing step.
{"title":"Spatio-Temporal Coded Imaging for Motion Deblurring","authors":"Shay Elmalem, R. Giryes, E. Marom","doi":"10.1364/COSI.2019.CTH4A.3","DOIUrl":"https://doi.org/10.1364/COSI.2019.CTH4A.3","url":null,"abstract":"Motion deblurring solution based on spatio-temporal coding is proposed. Using aperture coding and focus variations during exposure, a joint spatio-temporal coding is achieved, which is in-turn utilized for motion deblurring in the post processing step.","PeriodicalId":123636,"journal":{"name":"Imaging and Applied Optics 2019 (COSI, IS, MATH, pcAOP)","volume":"30 20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115450496","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：