Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/28355
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Alata, Romain | en_US |
dc.contributor.author | Zamkotsian, Frédéric | en_US |
dc.contributor.author | Lanzoni, Patrick | en_US |
dc.contributor.author | PARIANI, Giorgio | en_US |
dc.contributor.author | Bianco, A. | en_US |
dc.contributor.author | Bertarelli, Chiara | en_US |
dc.date.accessioned | 2020-11-16T12:28:14Z | - |
dc.date.available | 2020-11-16T12:28:14Z | - |
dc.date.issued | 2018 | en_US |
dc.identifier.isbn | 9781510615786 | en_US |
dc.identifier.issn | 0277-786X | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/28355 | - |
dc.description.abstract | Computer Generated Holograms (CGHs) are used for wavefront shaping and complex optics testing, including aspherical and free-form optics. Today, CGHs are recorded directly with a laser or intermediate masks, allowing only the realization of binary CGHs; they are efficient but can reconstruct only pixilated images. We propose a Digital Micromirror Device (DMD) as a reconfigurable mask, to record rewritable binary and grayscale CGHs on a photochromic plate. The DMD is composed of 2048x1080 individually controllable micro-mirrors, with a pitch of 13.68 μm. This is a real-time reconfigurable mask, perfect for recording CGHs. The photochromic plate is opaque at rest and becomes transparent when it is illuminated with visible light of suitable wavelength. We have successfully recorded the very first amplitude grayscale CGH, in equally spaced levels, so called stepped CGH. We recorded up to 1000x1000 pixels CGHs with a contrast greater than 50, using Fresnel as well as Fourier coding scheme. Fresnel's CGH are obtained by calculating the inverse Fresnel transform of the original image at a given focus, ranging from 50cm to 2m. The reconstruction of the recorded images with a 632.8nm He-Ne laser beam leads to images with a high fidelity in shape, intensity, size and location. These results reveal the high potential of this method for generating programmable/rewritable grayscale CGHs, which combine DMDs and photochromic substrates. | en_US |
dc.language.iso | eng | en_US |
dc.title | Programmable CGH on photochromic material using DMD generated masks | en_US |
dc.type | Conference paper | - |
dc.identifier.doi | 10.1117/12.2292075 | en_US |
dc.identifier.scopus | 2-s2.0-85047825573 | en_US |
dc.identifier.isi | 000452641000003 | en_US |
dc.identifier.url | https://www.spiedigitallibrary.org/conference-proceedings-of-spie/10546/2292075/Programmable-CGH-on-photochromic-material-using-DMD-generated-masks/10.1117/12.2292075.short | en_US |
dc.relation.medium | ELETTRONICO | en_US |
dc.relation.volume | 10546 | en_US |
dc.relation.firstpage | 1054606-1 | en_US |
dc.relation.lastpage | 1054606-14 | en_US |
dc.type.referee | REF_0 | en_US |
dc.description.international | sì | en_US |
dc.relation.alleditors | Douglass, Michael R.; Lee, Benjamin L. | en_US |
dc.relation.ispartofbook | Emerging Digital Micromirror Device Based Systems and Applications X | en_US |
dc.relation.conferencename | Emerging Digital Micromirror Device Based Systems and Applications X | en_US |
dc.relation.conferenceplace | San Francisco, California | en_US |
dc.relation.conferencedate | 27 January - 1 February, 2018 | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.type.miur | 273 Contributo in Atti di convegno | - |
dc.relation.series | PROCEEDINGS OF SPIE | en_US |
dc.identifier.adsbibcode | 2018SPIE10546E..06A | en_US |
dc.relation.ercsector | ERC sectors::Physical Sciences and Engineering::PE9 Universe sciences: astro-physics/chemistry/biology; solar systems; stellar, galactic and extragalactic astronomy, planetary systems, cosmology, space science, instrumentation::PE9_17 Instrumentation – telescopes, detectors and techniques | en_US |
dc.description.apc | no | en_US |
dc.description.oa | 1 – prodotto con file in versione Open Access (allegare il file al passo 5-Carica) | en_US |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.openairetype | Conference paper | - |
item.languageiso639-1 | en | - |
item.cerifentitytype | Publications | - |
item.grantfulltext | open | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | O.A. Brera | - |
crisitem.author.dept | O.A. Brera | - |
crisitem.author.orcid | 0000-0003-3724-7667 | - |
crisitem.author.orcid | 0000-0002-7691-404X | - |
crisitem.journal.journalissn | 0277-786X | - |
crisitem.journal.ance | E136238 | - |
Appears in Collections: | 3.01 Contributi in Atti di convegno |
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Items in DSpace are published in Open Access, unless otherwise indicated.