Pub Date : 2017-06-26DOI: 10.1364/ISA.2017.ITH1E.4
J. Dohet-Eraly, C. Yourassowsky, A. E. Mallahi, F. Dubois
We present a theoretical model, experimentally validated, characterizing the noise when partial spatial coherence illumination is used in digital holographic microscopy. Both defocusing distance of the noise-generating field and spatial coherence of light are considered.
{"title":"Noise Characterization in Digital Holographic Microscopy with Partial Spatial Coherence Illumination","authors":"J. Dohet-Eraly, C. Yourassowsky, A. E. Mallahi, F. Dubois","doi":"10.1364/ISA.2017.ITH1E.4","DOIUrl":"https://doi.org/10.1364/ISA.2017.ITH1E.4","url":null,"abstract":"We present a theoretical model, experimentally validated, characterizing the noise when partial spatial coherence illumination is used in digital holographic microscopy. Both defocusing distance of the noise-generating field and spatial coherence of light are considered.","PeriodicalId":263258,"journal":{"name":"Rundbrief Der Gi-fachgruppe 5.10 Informationssystem-architekturen","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126891229","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}
Recent progress on the Quanta Image Sensor (QIS) is reported. A 1Mjot QIS operating at 1040 fps with 0.22e- rms read noise has been deomstrated in a 2-layer stacked backside-illuminated 65nm/45nm CMOS image sensor process.
{"title":"Quanta image sensors (QIS) for low-light high speed imaging","authors":"E. Fossum","doi":"10.1364/ISA.2017.IM2E.3","DOIUrl":"https://doi.org/10.1364/ISA.2017.IM2E.3","url":null,"abstract":"Recent progress on the Quanta Image Sensor (QIS) is reported. A 1Mjot QIS operating at 1040 fps with 0.22e- rms read noise has been deomstrated in a 2-layer stacked backside-illuminated 65nm/45nm CMOS image sensor process.","PeriodicalId":263258,"journal":{"name":"Rundbrief Der Gi-fachgruppe 5.10 Informationssystem-architekturen","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123869159","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}
Computationally designed metamaterials are used to realize a number of novel nanophotonic devices. We report on the development of ultra-compact on-chip polarization rotators, waveguide cloaks and all optical modulators made possible by the use of a non-linear optimization algorithm.
{"title":"Ultra-compact nanophotonic devices designed by computational metamaterials","authors":"Apratim Majumder, B. Shen, R. Polson, R. Menon","doi":"10.1364/ISA.2017.IM2E.2","DOIUrl":"https://doi.org/10.1364/ISA.2017.IM2E.2","url":null,"abstract":"Computationally designed metamaterials are used to realize a number of novel nanophotonic devices. We report on the development of ultra-compact on-chip polarization rotators, waveguide cloaks and all optical modulators made possible by the use of a non-linear optimization algorithm.","PeriodicalId":263258,"journal":{"name":"Rundbrief Der Gi-fachgruppe 5.10 Informationssystem-architekturen","volume":"132 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121544861","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}
Replacing bulky refractive lenses, a planar high-NA diffractive-lens is demonstrated to achieve apochromatic broadband focusing. For three-wavelength illumination (450nm, 538nm and 610nm), an average focusing efficiency of 66.6% is achieved with far-field-diffraction limited focal spots.
{"title":"High-NA Chromatic-aberration-corrected Diffractive Lens for Broadband Focusing","authors":"Xiaowen Wan, R. Menon","doi":"10.1364/ISA.2017.IW3E.4","DOIUrl":"https://doi.org/10.1364/ISA.2017.IW3E.4","url":null,"abstract":"Replacing bulky refractive lenses, a planar high-NA diffractive-lens is demonstrated to achieve apochromatic broadband focusing. For three-wavelength illumination (450nm, 538nm and 610nm), an average focusing efficiency of 66.6% is achieved with far-field-diffraction limited focal spots.","PeriodicalId":263258,"journal":{"name":"Rundbrief Der Gi-fachgruppe 5.10 Informationssystem-architekturen","volume":"190 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115893770","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 : 2017-06-26DOI: 10.1364/ISA.2017.ITH4E.1
Irem Ülkü, Ersin Kızgut
This is the first time that blind compressive sensing (BCS) is used with online dictionary learning in hyperspectral image compression. BCS is among the best three algorithms in terms of compression performance at high ratios.
{"title":"Hyperspectral Compressive Sensing based on Online Dictionary Learning","authors":"Irem Ülkü, Ersin Kızgut","doi":"10.1364/ISA.2017.ITH4E.1","DOIUrl":"https://doi.org/10.1364/ISA.2017.ITH4E.1","url":null,"abstract":"This is the first time that blind compressive sensing (BCS) is used with online dictionary learning in hyperspectral image compression. BCS is among the best three algorithms in terms of compression performance at high ratios.","PeriodicalId":263258,"journal":{"name":"Rundbrief Der Gi-fachgruppe 5.10 Informationssystem-architekturen","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124711698","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 : 2017-06-26DOI: 10.1364/ISA.2017.ITU4E.2
Wan Detian, W. Baker, A. Parthasarathy, Zhu Liguo, Zeren Li, A. Yodh
Blood flow monitoring during rhythm exercising is very important for sports medicine and muscle dieases. Diffuse correlation spectroscopy(DCS) is a relative new invasive way to monitor blood flow but suffering from muscle fiber motion. In this study we focus on how to remove exercise driven artifacts and obtain accurate estimates of the increase in blood flow from exercise. Using a novel fast software correlator, we measured blood flow in forearm flexor muscles of N=2 healthy adults during handgrip exercise, at a sampling rate of 20 Hz. Combining the blood flow and acceleration data, we resolved the motion artifact in the DCS signal induced by muscle fiber motion, and isolated the blood flow component of the signal from the motion artifact. The results show that muscle fiber motion strongly affects the DCS signal, and if not accounted for, will result in an overestimate of blood flow more than ~1000%. Our measurements indicate rapid dilation of arterioles following exercise onset, which enabled blood flow to increase to a plateau of ~200% in ~10s. The blood flow also rapidly recovered to baseline following exercise in ~10s. Finally, preliminary results on the dependence of blood flow from exercise intensity changes will be discussed.
{"title":"Blood flow monitoring of exercising muscle with fast diffuse correlation spectroscopy: a pilot study","authors":"Wan Detian, W. Baker, A. Parthasarathy, Zhu Liguo, Zeren Li, A. Yodh","doi":"10.1364/ISA.2017.ITU4E.2","DOIUrl":"https://doi.org/10.1364/ISA.2017.ITU4E.2","url":null,"abstract":"Blood flow monitoring during rhythm exercising is very important for sports medicine and muscle dieases. Diffuse correlation spectroscopy(DCS) is a relative new invasive way to monitor blood flow but suffering from muscle fiber motion. In this study we focus on how to remove exercise driven artifacts and obtain accurate estimates of the increase in blood flow from exercise. Using a novel fast software correlator, we measured blood flow in forearm flexor muscles of N=2 healthy adults during handgrip exercise, at a sampling rate of 20 Hz. Combining the blood flow and acceleration data, we resolved the motion artifact in the DCS signal induced by muscle fiber motion, and isolated the blood flow component of the signal from the motion artifact. The results show that muscle fiber motion strongly affects the DCS signal, and if not accounted for, will result in an overestimate of blood flow more than ~1000%. Our measurements indicate rapid dilation of arterioles following exercise onset, which enabled blood flow to increase to a plateau of ~200% in ~10s. The blood flow also rapidly recovered to baseline following exercise in ~10s. Finally, preliminary results on the dependence of blood flow from exercise intensity changes will be discussed.","PeriodicalId":263258,"journal":{"name":"Rundbrief Der Gi-fachgruppe 5.10 Informationssystem-architekturen","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130085453","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}
Plenoptic imaging can be used to correct aberrations. However, current techniques are demanding on computing power and limit themselves to systems with small field of view. We present a simplified correction technique well adapted to wide-angle lens. We then present simulation and experimental results carried on a custom simple wide-angle lens.
{"title":"Simplified wide-angle lens corrected using a projection technique","authors":"X. Dallaire, S. Thibault","doi":"10.1364/ISA.2017.IW3E.1","DOIUrl":"https://doi.org/10.1364/ISA.2017.IW3E.1","url":null,"abstract":"Plenoptic imaging can be used to correct aberrations. However, current techniques are demanding on computing power and limit themselves to systems with small field of view. We present a simplified correction technique well adapted to wide-angle lens. We then present simulation and experimental results carried on a custom simple wide-angle lens.","PeriodicalId":263258,"journal":{"name":"Rundbrief Der Gi-fachgruppe 5.10 Informationssystem-architekturen","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132258763","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}
S. Shabahang, H. Kondakci, Massimo L. Villinger, Joshua D. Perlstein, A. Elhalawany, A. Abouraddy
We demonstrate broadband imaging through an optical micro-cavity in which omni-resonance is achieved by angularly-multiplexed phase-matching. We create a 60-nm-wide spectral transmission window starting from 0.7-nm-wide resonances.
{"title":"Broadband Imaging Through an Omni-Resonant Optical Micro-Cavity","authors":"S. Shabahang, H. Kondakci, Massimo L. Villinger, Joshua D. Perlstein, A. Elhalawany, A. Abouraddy","doi":"10.1364/ISA.2017.IW4E.3","DOIUrl":"https://doi.org/10.1364/ISA.2017.IW4E.3","url":null,"abstract":"We demonstrate broadband imaging through an optical micro-cavity in which omni-resonance is achieved by angularly-multiplexed phase-matching. We create a 60-nm-wide spectral transmission window starting from 0.7-nm-wide resonances.","PeriodicalId":263258,"journal":{"name":"Rundbrief Der Gi-fachgruppe 5.10 Informationssystem-architekturen","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125365933","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 : 2017-06-26DOI: 10.1364/ISA.2017.ITH1E.2
Ganghun Kim, N. Nagarajan, E. Pastuzyn, Kyle R Jenks, M. Capecchi, J. Shepherd, R. Menon
We demonstrate a fluorescent microscopy through an optical cannula (220µm diameter glass needle) for deep tissue imaging. We first show sample images captured in thin sections for the proof of principle. Then cannula is inserted deep into dissected brain tissue which captured high resolution images of microglia cells.
{"title":"Computational Cannula Microscopy: Fluorescent imaging through ultra-thin glass needle","authors":"Ganghun Kim, N. Nagarajan, E. Pastuzyn, Kyle R Jenks, M. Capecchi, J. Shepherd, R. Menon","doi":"10.1364/ISA.2017.ITH1E.2","DOIUrl":"https://doi.org/10.1364/ISA.2017.ITH1E.2","url":null,"abstract":"We demonstrate a fluorescent microscopy through an optical cannula (220µm diameter glass needle) for deep tissue imaging. We first show sample images captured in thin sections for the proof of principle. Then cannula is inserted deep into dissected brain tissue which captured high resolution images of microglia cells.","PeriodicalId":263258,"journal":{"name":"Rundbrief Der Gi-fachgruppe 5.10 Informationssystem-architekturen","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115051596","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 present a new concept for the design of optical elements. By specifying a general material with tailored anisotropic refractive index, we design refractive lenses that focus light with diffraction-limited resolution and reduced aberrations.
{"title":"Materials degrees of freedom for optical design","authors":"O. Tzang, Anurag Agrawal, R. Piestun","doi":"10.1364/ISA.2017.IW3E.3","DOIUrl":"https://doi.org/10.1364/ISA.2017.IW3E.3","url":null,"abstract":"We present a new concept for the design of optical elements. By specifying a general material with tailored anisotropic refractive index, we design refractive lenses that focus light with diffraction-limited resolution and reduced aberrations.","PeriodicalId":263258,"journal":{"name":"Rundbrief Der Gi-fachgruppe 5.10 Informationssystem-architekturen","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114072562","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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