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Polarization of luminescence of colour centres in YAG crystals

M Springis, A Pujats and J Valbis

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The polarization diagrams of the luminescence at 400 nm of colour centres in YAG crystals have been measured under excitation in absorption bands at 370 and 235 nm. The results suggest that the centre is most likely to be a one-electron centre involving an oxygen vacancy and a perturbing agent in the adjacent Al(Oh) site.


PACS

61.72.J- Point defects and defect clusters

78.55.Hx Other solid inorganic materials

Subjects

Condensed matter: electrical, magnetic and optical

Condensed matter: structural, mechanical & thermal

Dates

Issue 28 (15 July 1991)



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