{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,10]],"date-time":"2026-10-10T05:44:24Z","timestamp":1791611064606,"version":"4.3.4"},"reference-count":36,"publisher":"AIP Publishing","issue":"12","funder":[{"name":"EIPHI Graduate School","award":["ANR-17-EURE-0002"],"award-info":[{"award-number":["ANR-17-EURE-0002"]}]},{"name":"H2020 Marie Sk&\u0142odowska-Curie Actions","award":["713694"],"award-info":[{"award-number":["713694"]}]}],"content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2021,12,1]]},"abstract":"<jats:p>Nonlinear spatiotemporal systems are the basis for countless physical phenomena in such diverse fields as ecology, optics, electronics, and neuroscience. The canonical approach to unify models originating from different fields is the normal form description, which determines the generic dynamical aspects and different bifurcation scenarios. Realizing different types of dynamical systems via one experimental platform that enables continuous transition between normal forms through tuning accessible system parameters is, therefore, highly relevant. Here, we show that a transmissive, optically addressed spatial light modulator under coherent optical illumination and optical feedback coupling allows tuning between pitchfork, transcritical, and saddle-node bifurcations of steady states. We demonstrate this by analytically deriving the system\u2019s dynamical equations in correspondence to the normal forms of the associated bifurcations and confirm these results via extensive numerical simulations. Our model describes a nematic liquid crystal device using nano-dimensional dichalcogenide (a-As2S3) glassy thin films as photo sensors and alignment layers, and we use device parameters obtained from experimental characterization. Optical coupling, for example, using diffraction, holography, or integrated unitary maps allows implementing a variety of system topologies of technological relevance for neural networks and potentially Ising or XY-Hamiltonian models with ultralow energy consumption.<\/jats:p>","DOI":"10.1063\/5.0076846","type":"journal-article","created":{"date-parts":[[2021,12,30]],"date-time":"2021-12-30T13:32:51Z","timestamp":1640871171000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":15,"title":["Two-color optically addressed spatial light modulator as a generic spatiotemporal system"],"prefix":"10.1063","volume":"31","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4534-8065","authenticated-orcid":false,"given":"Vladimir V.","family":"Semenov","sequence":"first","affiliation":[{"name":"FEMTO-ST Institute\/Optics Department, CNRS and University Bourgogne Franche-Comt\u00e9 1 , 15B avenue des Montboucons, Besan\u00e7on Cedex 25030, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9869-7170","authenticated-orcid":false,"given":"Xavier","family":"Porte","sequence":"additional","affiliation":[{"name":"FEMTO-ST Institute\/Optics Department, CNRS and University Bourgogne Franche-Comt\u00e9 1 , 15B avenue des Montboucons, Besan\u00e7on Cedex 25030, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1474-5412","authenticated-orcid":false,"given":"Ibrahim","family":"Abdulhalim","sequence":"additional","affiliation":[{"name":"Department of Electro-Optics and Photonics Engineering, ECE School, and the Ilse Katz Institute for Nanoscale Science and Technology, Ben-Gurion University of the Negev 2 , 84105 Beer-Sheva, Israel"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1245-1602","authenticated-orcid":false,"given":"Laurent","family":"Larger","sequence":"additional","affiliation":[{"name":"FEMTO-ST Institute\/Optics Department, CNRS and University Bourgogne Franche-Comt\u00e9 1 , 15B avenue des Montboucons, Besan\u00e7on Cedex 25030, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4003-3056","authenticated-orcid":false,"given":"Daniel","family":"Brunner","sequence":"additional","affiliation":[{"name":"FEMTO-ST Institute\/Optics Department, CNRS and University Bourgogne Franche-Comt\u00e9 1 , 15B avenue des Montboucons, Besan\u00e7on Cedex 25030, France"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"317","published-online":{"date-parts":[[2021,12,30]]},"reference":[{"key":"2023063021163354200_c1"},{"key":"2023063021163354200_c2","doi-asserted-by":"publisher","first-page":"223","DOI":"10.1103\/RevModPhys.70.223","article-title":"Stochastic resonance","volume":"70","year":"1998","journal-title":"Rev. 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