Juris Upatnieks Created 2026-10-18 Updated 2026-11-05
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][ref]