Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Kavan Ahmadi"'
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
Abstract The detection of the longitudinal component of a highly focused electromagnetic beam is not a simple task. Although in recent years several methods have been reported in the literature, this measure is still not routinely performed. This pap
Externí odkaz:
https://doaj.org/article/ee01d1bce1864e288dde9d67464b3b53
Publikováno v:
IEEE Photonics Journal, Vol 12, Iss 3, Pp 1-10 (2020)
Document signature is a powerful technique used to determine whether a message is tampered or valid. Recently, this concept was extended to optical codes: we demonstrated that the combined use of optical techniques and machine learning algorithms mig
Externí odkaz:
https://doaj.org/article/2e9e64eda5c64e52a36ec11cb6fea81b
Autor:
Kavan Ahmadi, Artur Carnicer
The target of this paper is to implement an optically-based visual encryption system able to work with a large set of optical codes. The optical setup comprises a holographic system designed to generate spirally-polarized highly focused fields and an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d350a78392f937a1cdbeb728dafc9f84
http://hdl.handle.net/2445/193005
http://hdl.handle.net/2445/193005
Autor:
Kavan Ahmadi
Publikováno v:
Holography-Recent Advances and Applications
Holography-Recent Advances and Applications ISBN: 9781803565637
Holography-Recent Advances and Applications ISBN: 9781803565637
This chapter describes an efficient approach to generating light beams with arbitrary intensity profile and phase distribution. Accordingly, a fast method is described to characterize liquid crystal displays based on the Mach-Zehnder interferometer a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::52981933efa6afb8828d9ec33b6b844c
https://mts.intechopen.com/articles/show/title/beam-implementation-with-a-translucent-twisted-nematic-liquid-crystal-display
https://mts.intechopen.com/articles/show/title/beam-implementation-with-a-translucent-twisted-nematic-liquid-crystal-display
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
E-Prints Complutense. Archivo Institucional de la UCM
instname
Dipòsit Digital de la UB
Universidad de Barcelona
Scientific Reports
E-Prints Complutense. Archivo Institucional de la UCM
instname
Dipòsit Digital de la UB
Universidad de Barcelona
Scientific Reports
The detection of the longitudinal component of a highly focused electromagnetic beam is not a simple task. Although in recent years several methods have been reported in the literature, this measure is still not routinely performed. This paper descri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3b6d5f794df80e458ef8f5f804f903e3
https://doi.org/10.21203/rs.3.rs-598897/v1
https://doi.org/10.21203/rs.3.rs-598897/v1
Publikováno v:
OSA Imaging and Applied Optics Congress 2021 (3D, COSI, DH, ISA, pcAOP).
We introduce an algorithm able to map arbitrary complex values into an arbitrary modulation curve using the K-Nearest Neighbor algorithm. The proposed algorithm is around 80 times faster than the conventional calculation.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2470922498254477ff0272bf31a25705
https://doi.org/10.1364/dh.2021.dw5e.7
https://doi.org/10.1364/dh.2021.dw5e.7
Publikováno v:
Dipòsit Digital de la UB
Universidad de Barcelona
Universidad de Barcelona
Optical diffusers have been widely investigated from both theoretical and practical points of view.1 In particular, a large number of papers focus on numerical models related to the behavior of light interacting with such devices (see, for instance,2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0a5c35ad179cfd3ca739521f845e6682
https://doi.org/10.1117/12.2527393
https://doi.org/10.1117/12.2527393