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Opt. Soc. Am. A"],"published-print":{"date-parts":[[2025,4,1]]},"abstract":"<jats:p>We generalize a theoretical framework for\n\t\t\t\tLaguerre\u2013Gaussian-to-Hermite\u2013Gaussian (LG-to-HG) mode conversion induced\n\t\t\t\tby optical astigmatism and identify threea distinct conversion scenarios\n\t\t\t\tdepending on the astigmatism conditions. We analyze the LG beam\n\t\t\t\tdiffraction by three types of astigmatic optical elements, cylindrical\n\t\t\t\tlenses, quadratic curved-line gratings, and off-axis illuminated\n\t\t\t\telliptical zone plates, and show that the LG modes of different orders\n\t\t\t\tconvert to the corresponding HG modes over different distances, if at all.\n\t\t\t\tWe explore two families of astigmatic phase profiles that offer\n\t\t\t\tindependent control over the stretching and orientation of the converted\n\t\t\t\tmodes. Our theoretical predictions are in good qualitative agreement with\n\t\t\t\texperimental results.<\/jats:p>","DOI":"10.1364\/josaa.547816","type":"journal-article","created":{"date-parts":[[2025,2,25]],"date-time":"2025-02-25T20:00:25Z","timestamp":1740513625000},"page":"495","update-policy":"https:\/\/doi.org\/10.1364\/crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Laguerre\u2013Gaussian-to-Hermite\u2013Gaussian mode conversion revisited"],"prefix":"10.1364","volume":"42","author":[{"ORCID":"https:\/\/orcid.org\/0009-0009-0899-9369","authenticated-orcid":true,"given":"Somaye","family":"Fathollazade","sequence":"first","affiliation":[{"name":"Institute for Advanced Studies in Basic Sciences (IASBS)"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2703-8925","authenticated-orcid":true,"given":"Saifollah","family":"Rasouli","sequence":"additional","affiliation":[{"name":"Institute for Advanced Studies in Basic Sciences (IASBS)"},{"name":"Ministry of Science, Research and Technology"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0005-0190-8015","authenticated-orcid":true,"given":"Davud","family":"Hebri","sequence":"additional","affiliation":[{"name":"Dalhousie University"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0007-7862-9748","authenticated-orcid":true,"given":"Pouria","family":"Amiri","sequence":"additional","affiliation":[{"name":"Institute for Advanced Studies in Basic Sciences (IASBS)"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sergey\n\t\t\tA.","family":"Ponomarenko","sequence":"additional","affiliation":[{"name":"Dalhousie University"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"285","published-online":{"date-parts":[[2025,3,19]]},"reference":[{"key":"josaa-42-4-495-R1","doi-asserted-by":"publisher","first-page":"35","DOI":"10.1063\/1.1768672","volume":"57","author":"Padgett","year":"2004","journal-title":"Phys. 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All rights, including for\n\t\t\t\ttext and data mining (TDM), Artificial Intelligence (AI) training, and\n\t\t\t\tsimilar technologies, are reserved.","name":"copyright","label":"Copyright"}]}}