25 September 1989 Crystal Growth And Evaluation Of Rare Earth Orthogallates For Laser Hosts
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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.
© (1989) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Roger F. Belt and Robert Uhrin "Crystal Growth And Evaluation Of Rare Earth Orthogallates For Laser Hosts", Proc. SPIE 1104, Growth, Characterization, and Applications of Laser Host and Nonlinear Crystals, (25 September 1989); doi: 10.1117/12.960596; https://doi.org/10.1117/12.960596
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