Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Tanchao Pu"'
Autor:
Carolina Rendón-Barraza, Eng Aik Chan, Guanghui Yuan, Giorgio Adamo, Tanchao Pu, Nikolay I. Zheludev
Publikováno v:
APL Photonics, Vol 6, Iss 6, Pp 066107-066107-5 (2021)
Microscopes and various forms of interferometers have been used for decades in optical metrology of objects that are typically larger than the wavelength of light λ. Metrology of sub-wavelength objects, however, was deemed impossible due to the diff
Externí odkaz:
https://doaj.org/article/3ea6735b5641422ebea3509d0ebae418
Autor:
Tanchao Pu, Jun‐Yu Ou, Vassili Savinov, Guanghui Yuan, Nikitas Papasimakis, Nikolay I. Zheludev
Publikováno v:
Advanced Science, Vol 8, Iss 1, Pp n/a-n/a (2021)
Abstract A nonintrusive far‐field optical microscopy resolving structures at the nanometer scale would revolutionize biomedicine and nanotechnology but is not yet available. Here, a new type of microscopy is introduced, which reveals the fine struc
Externí odkaz:
https://doaj.org/article/02fe822a530447a5b1db51b17a393f33
Publikováno v:
AIP Advances, Vol 9, Iss 1, Pp 015308-015308-6 (2019)
We propose a V-shaped phase grating to simultaneously improve the diffraction efficiency of the 1st order diffraction mode and suppression of high order modes. An analytic description is given that indicates the 0th, 2nd, 3rd, and 4th order diffracti
Externí odkaz:
https://doaj.org/article/08beb12b2b6546e5839679b0f6d9a994
Autor:
Guanghui Yuan, Tongjun Liu, Sergei Kurdumov, Eng Aik Chan, Kevin F. MacDonald, Carolina Rendon Barraza, Tanchao Pu, Jun-Yu Ou, Nikolay I. Zheludev, Nikitas Papasimakis
Publikováno v:
Metamaterials, Metadevices, and Metasystems 2021.
We report on recent advances in applications of deep learning and topologically structured light to far-field non-destructive imaging with deep subwalength resolution and picometric metrology.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e33600de79d300e8813c527db68c8aa8
https://doi.org/10.1117/12.2595070
https://doi.org/10.1117/12.2595070
Publikováno v:
Optics Communications. 510:127951
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6a945e206453a031ae6a03988d99bdba
https://doi.org/10.1016/j.optcom.2022.127951
https://doi.org/10.1016/j.optcom.2022.127951
Autor:
Guanghui Yuan, Carolina Rendon-Barraza, Giorgio Adamo, Tanchao Pu, Nikolay I. Zheludev, Eng Aik Chan
Publikováno v:
Conference on Lasers and Electro-Optics.
We experimentally demonstrate that a linear dimension of a sub-wavelength nanoscale object can be measured with an accuracy better that λ/250 by a deep-learning-enabled examination of its diffraction pattern.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::495ff4f57a9341c33abc5aa81425c627
https://doi.org/10.1364/cleo_at.2021.jw1a.65
https://doi.org/10.1364/cleo_at.2021.jw1a.65
Autor:
Peter K. Smith, Guanghui Yuan, Edward T. F. Rogers, Tanchao Pu, Nikitas Papasimakis, Jun-Yu Ou, Nikolay I. Zheludev
Publikováno v:
Conference on Lasers and Electro-Optics.
We demonstrate experimentally label-free far-field imaging of subwavelength objects at resolution greater than λ/20, exceeding the diffraction limit by an order of magnitude. Our imaging approach, termed Deeply Subwavelength Topological Microscopy (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8095babba968961f3491de29949b841e
https://doi.org/10.1364/cleo_qels.2021.ftu4f.2
https://doi.org/10.1364/cleo_qels.2021.ftu4f.2
Autor:
Guanghui Yuan, Tanchao Pu, Vassili Savinov, Nikitas Papasimakis, Jun-Yu Ou, Nikolay I. Zheludev
Publikováno v:
Metamaterials, Metadevices, and Metasystems 2020.
We introduce a non-intrusive far-field optical microscopy, which reveals the fine structure of an object through its far-field scattering pattern under illumination with topologically structured light containing deeply subwavelength singularity featu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ec53589fbf10300b4a048fbed5356cfd
https://doi.org/10.1117/12.2568743
https://doi.org/10.1117/12.2568743
Publikováno v:
Applied Physics Letters
We report the experimental demonstration of deeply subwavelength far-field optical microscopy of unlabeled samples. We beat the ∼λ/2 diffraction limit of conventional optical microscopy several times over by recording the intensity pattern of cohe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::09d704415249c6ffd7e298f93f6afb2c
https://eprints.soton.ac.uk/440957/
https://eprints.soton.ac.uk/440957/
Publikováno v:
Applied Optics. 60:11134
We propose a single diffractive optical element called the composite fractional spiral zone plates to generate superimposed fractional optical vortices. Such an element is composed of two fractional spiral zone plates (FSZPs) through logical AND oper
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7a099a2b9d7ec8572c30aabc86682922
https://doi.org/10.1364/ao.444798
https://doi.org/10.1364/ao.444798