Influence of defects in the output power of c- and a-axis growth Nd:YVO4 single laser crystals

Autor:	Cai-Lin Wang, Kelvin G. Lynn, Charles R. Shawley
Rok vydání:	2006
Předmět:	Materials science Condensed matter physics General Physics and Astronomy chemistry.chemical_element Crystal growth Slip (materials science) Laser Crystallographic defect Neodymium law.invention Crystal chemistry.chemical_compound Crystallography chemistry law Grain boundary Yttrium orthovanadate
Zdroj:	Journal of Applied Physics. 99:123109
ISSN:	1089-7550 0021-8979
DOI:	10.1063/1.2207722
Popis:	The differences in the output powers of a- and c-axis growth neodymium-doped yttrium orthovanadate (Nd:YVO4) crystals grown by the Czochralski method were investigated. It was found that the differences in the output powers are due to crystal defects, such as veils and grain boundaries, which lead to changes in the thermal and optical properties of Nd:YVO4 and reduce the quality of the laser beam. To relieve internal stresses introduced by the crystal growth process, boules form grain boundaries and other thermodynamically favorable defects in the boule. Because c-axis grown Nd:YVO4 crystals do not contain a slip system, no grain boundaries or ghost veils can form. As a result, c-axis grown boules are highly vulnerable to thermal and stress fractures and require careful growth parameter selection to overcome these defects. However, a-axis grown crystal contain a slip system and can form thermodynamically stable defects including grain boundaries, scatter centers, and ghost veils. In this paper, data are p...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8e1154f08dfa5ee948273cd288fa1703 https://doi.org/10.1063/1.2207722 Zobrazit plný text záznamu