Hologram characteristics of Mn, Tb co-doped stoichiometric LiNbO3 single crystals by H. J. Lee, T. I. Shin, S. M. Lee, and D. H. Yoon

Crystal Research and Technology

Cryst. Res. Technol. 40, 477 (2005) - Abstract -

Hologram characteristics of Mn, Tb co-doped stoichiometric LiNbO₃ single crystals

H. J. Lee, T. I. Shin, S. M. Lee, and D. H. Yoon

Department of Advanced Materials Engineering, Sungkyunkwan University, Suwon 440-746, Korea

Keywords	micro pulling down method, photoluminescence, hologram grating, stoichiometric LiNbO₃ (SLN)
PACS	81.10.A, 42.40, 78.30
DOI	10.1002/crat.200410370

Mn, Tb co-doped stoichiometric LiNbO₃ (Mn:Tb:SLN) single crystals of 0.5~1.0 mm in diameter and 30~35 mm in length were grown using the micro-pulling down (μ-PD) method. Mn:Tb:SLN single crystals were also grown to 20-25 mm in diameter and 30-35 mm in length using the Czochralski (CZ) method. The homogeneous distributions of Mn and Tb concentration were confirmed by the EPMA and defects were observed by optical microscopy. We investigated the photoluminescence (PL) and hologram grating properties of Mn:Tb:SLN single crystals. The effect of concentration of dopant MnO₂ and Tb₄O₇ on the luminescnce properties of the Mn:Tb:LiNbO₃ single crystals excited by laser line 325 nm, 488 nm and 514 nm is reported.

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