= Juris Upatnieks
{c}
{tag=Physicist}
{title2=1936–2026}
{wiki}
<Juris Upatnieks> and <Emmett Leith> developed laser <holography>, publicly demonstrating a three-dimensional hologram in 1964. A tilted reference <light> field records <wave interference> with the field scattered by an object. During reconstruction, its angle helps separate the desired image from the other reconstructed components. The long <coherence length> of a <laser> made this geometry practical, allowing the reference path to go around the object.<Professional profile of Juris Upatnieks>[Optica account: collaboration with Leith, 1962–1964 papers and 1964 demonstration]{ref}<Holography, 1948-1971 by Dennis Gabor>[Skew reference wave and angular separation of reconstructed images]{ref}
A <physicist>.<Professional profile of Juris Upatnieks>[Independent professional profile]{ref}https://www.researchlatvia.gov.lv/en/memoriam-juris-upatnieks-07051936-17052026[Independent professional profile]{ref}
\Image[https://commons.wikimedia.org/wiki/Special:Redirect/file/Professor_Juris_Upatnieks_1963.jpg?width=260]
{title=Portrait of <Juris Upatnieks>}
{description=University of Michigan. News and Information Services. https://creativecommons.org/licenses/by/4.0/[CC BY 4.0], via Wikimedia Commons.}
{source=https://commons.wikimedia.org/wiki/File:Professor_Juris_Upatnieks_1963.jpg}
{width=260}
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