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Express"],"published-print":{"date-parts":[[2021,9,27]]},"abstract":"<jats:p>Ultrafast pulse-beam characterization is critical for diverse scientific and industrial applications from micromachining to generating the highest intensity laser pulses. The four-dimensional structure of a pulse-beam, <jats:inline-formula>\n      <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\">\n\t<mml:mrow class=\"MJX-TeXAtom-ORD\">\n\t  <mml:mover>\n\t    <mml:mi>E<\/mml:mi>\n\t    <mml:mo>~<\/mml:mo>\n\t  <\/mml:mover>\n\t<\/mml:mrow>\n\t<mml:mo stretchy=\"false\">(<\/mml:mo>\n\t<mml:mi>x<\/mml:mi>\n\t<mml:mo>,<\/mml:mo>\n\t<mml:mi>y<\/mml:mi>\n\t<mml:mo>,<\/mml:mo>\n\t<mml:mi>z<\/mml:mi>\n\t<mml:mo>,<\/mml:mo>\n\t<mml:mi>\u03c9<\/mml:mi>\n\t<mml:mo stretchy=\"false\">)<\/mml:mo>\n      <\/mml:math>\n    <\/jats:inline-formula>, can be fully characterized by coupling spatiospectral metrology with spectral phase measurement. When temporal pulse dynamics are not of primary interest, spatiospectral characterization of a pulse-beam provides crucial information even without spectral phase. Here we demonstrate spatiospectral characterization of pulse-beams via multiplexed broadband ptychography. The complex spatial profiles of multiple spectral components, <jats:inline-formula>\n      <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\">\n\t<mml:mrow class=\"MJX-TeXAtom-ORD\">\n\t  <mml:mover>\n\t    <mml:mi>E<\/mml:mi>\n\t    <mml:mo>~<\/mml:mo>\n\t  <\/mml:mover>\n\t<\/mml:mrow>\n\t<mml:mo stretchy=\"false\">(<\/mml:mo>\n\t<mml:mi>x<\/mml:mi>\n\t<mml:mo>,<\/mml:mo>\n\t<mml:mi>y<\/mml:mi>\n\t<mml:mo>,<\/mml:mo>\n\t<mml:mi>\u03c9<\/mml:mi>\n\t<mml:mo stretchy=\"false\">)<\/mml:mo>\n      <\/mml:math>\n    <\/jats:inline-formula>, from modelocked Ti:sapphire and from extreme ultra-violet pulse-beams are reconstructed with minimum intervening optics and no refocusing. Critically, our technique does not require spectral filters, interferometers, or reference pulses.<\/jats:p>","DOI":"10.1364\/oe.433752","type":"journal-article","created":{"date-parts":[[2021,9,13]],"date-time":"2021-09-13T08:30:09Z","timestamp":1631521809000},"page":"32474","update-policy":"https:\/\/doi.org\/10.1364\/crossmark_policy","source":"Crossref","is-referenced-by-count":34,"title":["Spatiospectral characterization of ultrafast pulse-beams by multiplexed broadband ptychography"],"prefix":"10.1364","volume":"29","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7064-8625","authenticated-orcid":true,"given":"David","family":"Goldberger","sequence":"first","affiliation":[{"name":"Colorado School of Mines"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9091-8071","authenticated-orcid":true,"given":"David","family":"Schmidt","sequence":"additional","affiliation":[{"name":"Colorado School of Mines"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jonathan","family":"Barolak","sequence":"additional","affiliation":[{"name":"Colorado School of Mines"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bojana","family":"Ivanic","sequence":"additional","affiliation":[{"name":"Colorado School of Mines"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Charles G.","family":"Durfee","sequence":"additional","affiliation":[{"name":"Colorado School of Mines"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Daniel E.","family":"Adams","sequence":"additional","affiliation":[{"name":"Colorado School of Mines"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"285","published-online":{"date-parts":[[2021,9,24]]},"reference":[{"key":"oe-29-20-32474-R1","doi-asserted-by":"publisher","first-page":"9285","DOI":"10.1364\/AO.400184","volume":"59","author":"Elgohary","year":"2020","journal-title":"Appl. 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