{ "meta": { "api_type": "NWO Projects API", "version": "1.0.2", "licence": { "name": "CC0 1.0 Universal", "url": "https://creativecommons.org/publicdomain/zero/1.0", "description": "To the extent possible under law, all copyright and related or neighbouring rights have been waived worldwide to the data made available through this API." }, "documentation": "https://doi.org/10.5281/zenodo.14918287", "release_date": "2025-08-20T00:00:00", "funder": "https://doi.org/10.13039/501100003246", "ror_id": "https://ror.org/04jsz6e67", "date": "2026-11-05T00:00:00", "count": 1, "per_page": 100, "pages": 1, "page": 1 }, "projects": [ { "project_id": "021.001.116", "title": "Test van quantumelectrodynamica in ultrakoud helium", "funding_scheme_id": 2601, "funding_scheme": "Toptalent 2006 BOO", "department": "", "sub_department": "NWO-breed", "start_date": "2007-05-01T00:00:00", "end_date": "2011-04-19T00:00:00", "reporting_year": 2007, "summary_nl": "Moderne technieken van ultra-preciese frequentiemetrologie op basis van frequentiekam lasers zullen worden toegepast om een bijna verboden overgang in het heliumatoom te meten. De meest preciese meting zal worden verricht aan een sample van ultra koude atomen, dat wordt geproduceerd door laserkoeltechnieken. Doel van het onderzoek is een test uit te voeren van de theorie van de quantumelectrodynamica (QED), vooral met het oog op twee-electropn bijdragen waarvoor helium het fundamentele modelsysteem is.", "summary_en": "Moderne technieken van ultra-preciese frequentiemetrologie op basis van frequentiekam lasers zullen worden toegepast om een bijna verboden overgang in het heliumatoom te meten. De meest preciese meting zal worden verricht aan een sample van ultra koude atomen, dat wordt geproduceerd door laserkoeltechnieken. Doel van het onderzoek is een test uit te voeren van de theorie van de quantumelectrodynamica (QED), vooral met het oog op twee-electropn bijdragen waarvoor helium het fundamentele modelsysteem is.", "project_members": [ { "role": "Project leader", "member_id": 168764, "last_name": "Dijk", "degree_post_nominal": "MSc", "initials": "T.", "first_name": "Thomas", "prefix": "van", "organisation": "Vrije Universiteit Amsterdam||Faculteit der Bètawetenschappen (Faculty of Science)||Afdeling Natuur- en Sterrenkunde (Physics and Astronomy)||Theoretische Natuurkunde", "organisation_id": 80247, "ror": "https://ror.org/008xxew50", "active": false }, { "role": "Researcher", "member_id": 168764, "last_name": "Dijk", "degree_post_nominal": "MSc", "initials": "T.", "first_name": "Thomas", "prefix": "van", "organisation": "Vrije Universiteit Amsterdam||Faculteit der Bètawetenschappen (Faculty of Science)||Afdeling Natuur- en Sterrenkunde (Physics and Astronomy)||Theoretische Natuurkunde", "organisation_id": 80247, "ror": "https://ror.org/008xxew50", "active": false }, { "role": "Main Applicant", "member_id": 168764, "last_name": "Dijk", "degree_post_nominal": "MSc", "initials": "T.", "first_name": "Thomas", "prefix": "van", "organisation": "Vrije Universiteit Amsterdam||Faculteit der Bètawetenschappen (Faculty of Science)||Afdeling Natuur- en Sterrenkunde (Physics and Astronomy)||Theoretische Natuurkunde", "organisation_id": 80247, "ror": "https://ror.org/008xxew50", "active": true } ], "products": [ { "title": "Coherence singularities in the far field generated by partially coherent sources", "year": 2009, "type": "Wetenschappelijk artikel", "journal_title": "Physical Review A", "authors": [ { "last_name": "Dijk", "initials": "T", "first_name": "Thomas", "prefix": "van", "role": "Auteur", "index_number": 0 }, { "last_name": "Schouten", "initials": "H.F.", "role": "Auteur", "index_number": 0 }, { "last_name": "Visser", "initials": "T.D.", "role": "Auteur", "index_number": 0 } ] }, { "title": "Evolution of singularities in a partially coherent vortex beam", "year": 2009, "type": "Wetenschappelijk artikel", "journal_title": "Jnl. of the Optical Society of America A", "authors": [ { "last_name": "Dijk", "initials": "T", "first_name": "Thomas", "prefix": "van", "role": "Auteur", "index_number": 0 }, { "last_name": "Visser", "initials": "T.D.", "role": "Auteur", "index_number": 0 } ] }, { "title": "Shaping the focal intensity distribution using spatial coherence", "year": 2008, "edition": "3", "start": 575, "end": 581, "type": "Wetenschappelijk artikel", "journal_title": "Journal of the optical society of america A", "authors": [ { "last_name": "Gbur", "initials": "G", "role": "Auteur", "index_number": 0 }, { "last_name": "Dijk", "initials": "T", "prefix": "van", "role": "Auteur", "index_number": 0 }, { "last_name": "Visser", "initials": "T. D.", "role": "Auteur", "index_number": 0 } ] }, { "title": "Experimental demonstration of an intensity minimum at the focus of a laser beam created by spatial coherence: Application to optical trapping of dielectric particles", "year": 2010, "edition": "35", "type": "Wetenschappelijk artikel", "journal_title": "Optics Letters", "authors": [ { "last_name": "Raghunathan", "initials": "S.B.", "role": "Auteur", "index_number": 1 }, { "last_name": "Dijk", "initials": "T.", "prefix": "van", "role": "Auteur", "index_number": 2 }, { "last_name": "Peterman", "initials": "E.J.G.", "role": "Auteur", "index_number": 3 }, { "last_name": "Visser", "initials": "T.D.", "role": "Auteur", "index_number": 4 } ] }, { "title": "Effects of spatial coherence on the angular distribution of radiant intensity generated by scattering on a sphere", "year": 2010, "edition": "104", "type": "Wetenschappelijk artikel", "journal_title": "Phys. Rev. Lett.", "authors": [ { "last_name": "Dijk", "initials": "T.", "prefix": "van", "role": "Auteur", "index_number": 1 }, { "last_name": "Fischer", "initials": "D.G.", "role": "Auteur", "index_number": 2 }, { "last_name": "Visser", "initials": "T.D.", "role": "Auteur", "index_number": 3 }, { "last_name": "Wolf", "initials": "E.", "role": "Auteur", "index_number": 4 } ] }, { "title": "Geometric interpretation of the Pancharatnam connection and non-cyclic polarization changes", "year": 2010, "edition": "27", "type": "Wetenschappelijk artikel", "journal_title": "J. Opt. Soc. Am. 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