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Proceedings Paper

Crystal Growth And Evaluation Of Rare Earth Orthogallates For Laser Hosts
Author(s): Roger F. Belt; Robert Uhrin
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Paper Abstract

Single crystals of the perovskite-related rare earth orthogallates have been grown and examined for laser hosts. LaGaO3 in pure form generally contains color centers or other intrinsic defects which lead to a high absorption from the ultra-violet to about 600 nm. NdGaO3 can be grown in large clear boules with proper care. Most orthogallates contain some twins which limit optical quality. Twins can be eliminated in growth by a judicious choice of mixed crystals involving La-Nd, La-Gd, or La-Y crystal compositions which have their lattice constants adjusted to an ideal cubic unit cell. We have grown crystals of one atomic percent Nd:LaGaO3 for specific evaluation. The fluorescent lifetime was measured as 225 μs. We also report absorption spectra and fluorescent emission data for this crystal.

Paper Details

Date Published: 25 September 1989
PDF: 7 pages
Proc. SPIE 1104, Growth, Characterization, and Applications of Laser Host and Nonlinear Crystals, (25 September 1989); doi: 10.1117/12.960596
Show Author Affiliations
Roger F. Belt, Litton Systems, Inc. (United States)
Robert Uhrin, Litton Systems, Inc. (United States)

Published in SPIE Proceedings Vol. 1104:
Growth, Characterization, and Applications of Laser Host and Nonlinear Crystals
Jui Teng Lin, Editor(s)

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