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This paper describes the first demonstration for feeding back the results obtained by the line-focus-beam ultrasonic material characterization (LFB-UMC) system to the crystal growth conditions for optical-grade LiTaO/sub 3/ crystals and for achieving much improved homogeneity of chemical composition. We evaluated a commercially available optical-grade LiTaO/sub 3/ single crystal with a nominally congruent...
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