LeGrand Van Uitert (May 8, 1922 in Salt Lake City – June 3, 1988 in Morristown, New Jersey) was an American scientist who co-invented the first continuous beam optical MASER, now known as a LASER, using a synthetic rare-earth doped garnet crystal.
U.S.
patent applications for the invention of the continuous wave optical MASER were filed on August 7, 1961, and issued as U.S.
Patent Nos.
3,174,938 (March 23, 1965) and 3,177,154 (April 6, 1965).
In 1964, Van Uitert, Joseph E.
Geusic, and H.
W.
Marcos demonstrated lasing in Nd-Yttrium Aluminum Garnet (Nd:YAG), which would become the dominant solid state laser.