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Growth and Characterization of LiNbO 3 Single Crystals Doped with Cu and Fe Ions
Author(s) -
Pracka I.,
Bajor A. L.,
Kaczmarek S. M.,
Swirkowicz M.,
Kaczmarek B.,
Kisielewski J.,
Lukasiewicz T.
Publication year - 1999
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/(sici)1521-4079(199906)34:5/6<627::aid-crat627>3.0.co;2-0
Subject(s) - lithium niobate , dopant , doping , ion , materials science , absorption (acoustics) , irradiation , czochralski method , absorption spectroscopy , analytical chemistry (journal) , crystal (programming language) , crystal growth , infrared , crystallography , chemistry , optics , optoelectronics , organic chemistry , chromatography , physics , computer science , nuclear physics , composite material , programming language
Single crystals of lithium niobate doped with 0.03 and 0.1 at.% of Cu or Fe ions were grown by the Czochralski technique. Optical absorption spectra in visible and infrared regions before and after gamma irradiation with doses up to 10 5 Gy were measured and positions of both dopants in LiNbO 3 lattice were analyzed according to changes in optical absorption in the range of OH ‐ group absorption. Some properties of crystals doped with Cu during the growth processes were compared to those for specimens doped by thermodiffusion. It was observed that doping with Cu results in an increase of crystal resistance to radiation.