Juris Upatnieks is a notable Latvian scientist and inventor, particularly known for his work in the field of telecommunications, including the development of fiber optics and photonics. His research has contributed to advancements in optical communication technologies. While he may not be widely recognized outside of specific academic and industrial circles, his contributions have had a significant impact within scientific and engineering communities.
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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.[ref]
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
A physicist.[ref]
Professional profile of Juris Upatnieks. Independent professional profile
[ref]https://www.researchlatvia.gov.lv/en/memoriam-juris-upatnieks-07051936-17052026. Independent professional profile
Portrait of Juris Upatnieks
. University of Michigan. News and Information Services. CC BY 4.0, via Wikimedia Commons. Source.