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Growth and Optical Properties of Doped LiTaO 3 Single Crystals
Author(s) -
Lukasiewicz T.,
RybaRomanowski W.,
Sokólska J.,
Swirkowicz M.,
Golab S.,
Galazka Z.
Publication year - 2001
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/1521-4079(200102)36:2<127::aid-crat127>3.0.co;2-l
Subject(s) - lithium tantalate , materials science , doping , ion , excited state , czochralski method , lithium (medication) , analytical chemistry (journal) , curie temperature , crucible (geodemography) , emission spectrum , absorption (acoustics) , absorption spectroscopy , tantalate , iridium , spectral line , optics , lithium niobate , chemistry , optoelectronics , atomic physics , ferroelectricity , condensed matter physics , dielectric , endocrinology , composite material , chromatography , medicine , physics , computational chemistry , organic chemistry , astronomy , ferromagnetism , biochemistry , catalysis
Single crystals of lithium tantalate (LiTaO 3 ) doped with Pr, Nd + Yb and Tm were grown by the Czochralski method. A thermal system with 50 mm diameter iridium crucible and two different afterheaters (active and passive) was checked with respect to temperature distribution in a pulling region. The obtained crystals were up to 20 mm in diameter and up 50 mm in length. Crystals were poled, and the Curie temperature was determined for specimens cut of from different parts of single crystals. The polarized absorption spectra, time resolved emission spectra and emission lifetime of Pr 3+ doped LiTaO 3 crystals were measured. An intense emission from the 3 P 0 level was observed. Optical properties of the Yb 3+ ions excited by energy transfer from Nd3+ ions have been researched for LiTaO 3 :Nd, Yb crystals.