Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Karen Asatryan"'
Publikováno v:
Optics express. 27(13)
We present the example of a specific design of an electrically tunable liquid crystal lens (TLCL) with floating electrode to analyze experimentally the potential of using TLCLs in intraocular implants. An optimized voltage-frequency driving technique
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::886d3188a36c9f1daccf8838339c0dc4
https://pubmed.ncbi.nlm.nih.gov/31252817
https://pubmed.ncbi.nlm.nih.gov/31252817
Publikováno v:
Optics express. 25(24)
A mobile phone camera with an innovative electrically tunable liquid crystal lens (TLCL) concept is demonstrated. We first report the comparative theoretical and experimental analyses of the performance of a traditional "modal control" TLCL versus a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::788a1abb64bbbbd6d9a689110aa0485c
https://pubmed.ncbi.nlm.nih.gov/29221030
https://pubmed.ncbi.nlm.nih.gov/29221030
Autor:
Karen Asatryan, Réal Vallée, Oleg I. Medvedkov, T M Galstian, V. G. Plotnichenko, Sergei A Vasil'ev, M Bernier, Evgenii M Dianov, P I Gnusin
Publikováno v:
Quantum Electronics. 41:465-468
Bragg gratings with a second-order resonance wavelength in the near-IR spectral region have been inscribed into single-mode chalcogenide (As2S3) glass fibre by a He — Ne laser beam using a configuration typical of Bragg grating fabrication in germa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::abb5246a68575f7c1744ae5a9342ece0
https://doi.org/10.1070/qe2011v041n05abeh014521
https://doi.org/10.1070/qe2011v041n05abeh014521
Publikováno v:
Journal of the Optical Society of America. A, Optics, image science, and vision. 32(5)
Theoretical modeling is performed for a liquid crystal (LC) lens that uses a combination of two dielectric lenses and voltage dividing principle to shape the electric field in space. Electric field, LC reorientation, and optical phase retardation pro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9e01132b408debacca5f03d2d2607aad
https://pubmed.ncbi.nlm.nih.gov/26366904
https://pubmed.ncbi.nlm.nih.gov/26366904
Publikováno v:
Optics Communications. 251:286-291
We describe a method that allows increasing the intensity of images holographically recorded in azo dye doped polymer films. The saturation of photoisomerization processes decreases the modulation depth of a holographic grating, hence the intensity o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::92e5188b98eee57ba8560e24c0e3c0cc
https://doi.org/10.1016/j.optcom.2005.03.004
https://doi.org/10.1016/j.optcom.2005.03.004
Publikováno v:
Optics Communications. 230:301-307
Real-time study of the formation of Bragg gratings in monolayer As 2 S 3 ridge waveguides is presented. A transverse holographic method is used to record such gratings. The periodic photodarkening of the layer leads to the formation of a Bragg gratin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::77a79d47eed779d45add4d702820bac7
https://doi.org/10.1016/j.optcom.2003.11.027
https://doi.org/10.1016/j.optcom.2003.11.027
Publikováno v:
Advanced Functional Materials. 13:781-788
This work explores the use of photoactive elastomers as elastic holographic materials. Holographic gratings were recorded on stretched films of an azobenzene elastomer, which is composed of a side-chain liquid-crystalline polymer with azobenzene meso
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b45d8e10a3d826dec831de3412ff6467
https://doi.org/10.1002/adfm.200304358
https://doi.org/10.1002/adfm.200304358
Publikováno v:
Philosophical Magazine Letters. 83:117-124
We report metastable photoinduced volume expansion (hyperexpansion) of up to 10 µm in height and several millimetres in diameter for the chalcogenide glass As 2 S 3 . This is an order of magnitude larger than reported to date in any material, includ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e165d57986f8ae6889450873f2f4135e
https://doi.org/10.1080/0950083021000058054
https://doi.org/10.1080/0950083021000058054
Publikováno v:
Imaging and Applied Optics 2014.
Miniaturization of optical cameras tightens the manufacturing and operation tolerances and increases the complexity of integration of mechanically moving elements for auto focus, image stabilization and zoom. Liquid crystals enable those functions wi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d585b4d20610b91fca384d07074a54bd
https://doi.org/10.1364/aio.2014.ath1a.1
https://doi.org/10.1364/aio.2014.ath1a.1
Publikováno v:
Applied Physics Letters. 84:1626-1628
Polarization gratings were recorded in amorphous As2S3 chalcogenide thin films in three orthogonal recording configurations. The analysis of polarization discrimination properties of such vector gratings revealed a poor performance. It was shown that
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6ab6f3bce36824ab56936388ec9f8058
https://doi.org/10.1063/1.1666999
https://doi.org/10.1063/1.1666999