Effect of microstructural features on the laser efficiency of Nd{sup 3+}:Y{sub 3}Al{sub 5}O{sub 12} ceramics

Journal Article · Wed Sep 30 04:00:00 EDT 2015 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2015V045N09ABEH015862· OSTI ID:22551182

Vorona, I O; Yavetskiy, R P; Tolmachev, A V; Shpilinskaya, O L ^[1]; Li, Jiang; Pan, Yubai ^[2]; Voznyy, V L ^[3]

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1. Institute for Single Crystals of NAS of Ukraine (Ukraine)
2. Key Laboratory of Transparent and Opto-functional Advanced Inorganic Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050 (China)
3. Specialized Enterprise 'Holography' Ltd, Kiev (Ukraine)

The optical properties and microstructure of transparent Nd{sup 3+}:Y{sub 3}Al{sub 5}O{sub 12} ceramics synthesised by different reactive sintering routes are studied. It is found that the residual porosity of optical ceramics is directly related to the homogeneity of the microstructure of initial compacts, which can be estimated by the existence of particle agglomerates larger than 1 mm in initial nanopowders. A qualitative correlation is established between the residual porosity, the optical losses and the lasing slope efficiency of Nd{sup 3+}:Y{sub 3}Al{sub 5}O{sub 12} ceramics. The maximum laser efficiency (η = 49%) was observed in the samples with the lowest porosity (2.3 × 10{sup -3} vol %). (lasers)

• OSTI ID: 22551182
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Journal Name: Quantum Electronics (Woodbury, N.Y.) Journal Issue: 9 Vol. 45; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
AGGLOMERATION
CERAMICS
ELEMENTARY PARTICLES
LASERS
MICROSTRUCTURE
NANOSTRUCTURES
NEODYMIUM IONS
OPTICAL PROPERTIES
POROSITY
POWDERS
SINTERING
SYNTHESIS