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Growth and characterization of Nd3+ doped strontium hexa – aluminates single crystals

L. GHEORGHE1,* , V. LUPEI1, A. LUPEI1, C. GHEORGHE1, A. ACHIM1, G. AKA2, C. VARONA2

Affiliation

  1. National Institute R&D for Lasers, Plasma and Radiation Physics, ECS Laboratory, Bucharest, Romania
  2. Superior National School of Chemistry of Paris, LCAES Laboratory, Paris, France

Abstract

Nd3+-doped strontium hexa-aluminates crystals, Nd: ASL (Sr1-xNdyLax-yMgxAl12-xO19), with an extended composition parameter x (0.05 and 0.5), have been grown by the Czochralski puling technique. Structural and compositional properties of the as-grown crystals have been studied. The results show that high crystalline perfection and large size crystals of both compositions can be grown. Low-temperature optical absorption spectra of crystals with compositions corresponding to x = 0.5 and x = 0.05 reveal that such crystals predominantly contain either C1- or C2-type Nd3+-centers respectively. The possibility to thus differentiate between the two types of the dopant structural centers is of utmost importance for laser applications..

Keywords

Crystals growth, Czochralski, Laser crystals, X-ray, Optical spectroscopy.

Submitted at: Oct. 14, 2005
Accepted at: Jan. 26, 2006

Citation

L. GHEORGHE, V. LUPEI, A. LUPEI, C. GHEORGHE, A. ACHIM, G. AKA, C. VARONA, Growth and characterization of Nd3+ doped strontium hexa – aluminates single crystals, Journal of Optoelectronics and Advanced Materials Vol. 8, Iss. 1, pp. 82-85 (2006)