Nonlinear absorption in crystalline niobates containing stimulated defects

The authors have examined Ba/sub 2/NaNb/sub 5/O/sub 15/ and LiNbO/sub 3/ crystals, which are widely used in laser instrumentation, which had radiation-stimulated defects. The defects were produced with a ..gamma..-Co/sup 60/ apparatus at room temperature with absorbed doses of 1 x 10/sup 5/-2 x 10/s...

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Veröffentlicht in:	J. Appl. Spectrosc. (Engl. Transl.); (United States) 1987-03, Vol.46 (3), p.289-293
Hauptverfasser:	Andreev, B. V., Zakharkin, B. I., Karaseva, L. G., Konovalov, V. A., Lebedeva, T. P., Nikolaev, V. N.
Format:	Artikel
Sprache:	eng
Schlagworte:	360202 - Ceramics, Cermets, & Refractories- Structure & Phase Studies 360204 - Ceramics, Cermets, & Refractories- Physical Properties 360206 - Ceramics, Cermets, & Refractories- Radiation Effects ABSORPTIVITY ALKALI METAL COMPOUNDS ALKALINE EARTH METAL COMPOUNDS BARIUM COMPOUNDS BARIUM OXIDES BETA DECAY RADIOISOTOPES BETA-MINUS DECAY RADIOISOTOPES CHALCOGENIDES COBALT 60 COBALT ISOTOPES CRYSTAL DEFECTS CRYSTAL STRUCTURE CRYSTALS ELECTROMAGNETIC RADIATION GAMMA RADIATION INTERMEDIATE MASS NUCLEI INTERNAL CONVERSION RADIOISOTOPES IONIZING RADIATIONS IRRADIATION ISOMERIC TRANSITION ISOTOPES ISOTOPES LASER MATERIALS LITHIUM COMPOUNDS LITHIUM OXIDES MATERIALS MATERIALS SCIENCE MATERIALS TESTING MATHEMATICAL MODELS MINUTES LIVING RADIOISOTOPES NIOBIUM COMPOUNDS NIOBIUM OXIDES NUCLEI ODD-ODD NUCLEI OPTICAL PROPERTIES OXIDES OXYGEN COMPOUNDS PHYSICAL PROPERTIES PHYSICAL RADIATION EFFECTS RADIATION EFFECTS RADIATIONS RADIOISOTOPES REFRACTORY METAL COMPOUNDS SODIUM COMPOUNDS SODIUM OXIDES SPECTROPHOTOMETRY TESTING TRANSITION ELEMENT COMPOUNDS YEARS LIVING RADIOISOTOPES
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Beschreibung
Zusammenfassung:	The authors have examined Ba/sub 2/NaNb/sub 5/O/sub 15/ and LiNbO/sub 3/ crystals, which are widely used in laser instrumentation, which had radiation-stimulated defects. The defects were produced with a ..gamma..-Co/sup 60/ apparatus at room temperature with absorbed doses of 1 x 10/sup 5/-2 x 10/sup 8/ rad; the Ba/sub 2/NaNb/sub 5/O/sub 15/ and LiNbO/sub 3/ crystals were irradiated at dose rates of 2.4 x 10/sup 4/ and 8.0 x 10/sup 4/ rad/min, correspondingly. The optical absorption was recorded with a Beckman Acta MVII spectrophotometer at 200-1400 nm before and after irradiation.
ISSN:	0021-9037 1573-8647
DOI:	10.1007/BF00660217