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Proceedings Paper

Growth of a Cr, Tm, Ho:YAG crystal and its optical and laser characteristics
Author(s): Zygmunt Frukacz; Jaroslaw Kisielewski; Zygmunt Mierczyk; Waldemar Zendzian
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Paper Abstract

Yttrium aluminum garnets doped by Cr, Tm, and Ho have been obtained by Czochralski method using iridium crucible and HF heating. Assumed concentrations of dopants are n(Cr) equals 2.3 X 1020 cm-3, n(Tm) equals 7.9 X 1020 cm-3 and n(Ho) equals 5 X 1019 cm-3, respectively. Moreover, the distribution coefficients for chromium (Cr), thulium (Tm), and holmium (Ho) are 2.4, 1.2, and 1, respectively. Thus, the concentrations of Cr and Tm dopants change along the crystal. Monocrystals having 28% of the initial mass of the crucible ingot and 75 mm long have been obtained. The concentrations of dopants calculated with the help of the normal freeze equation at the end of the crystal are n(Cr) equals 1.45 X 1020 cm-3, n(Tm) equals 7.4 X 1020 cm-3, respectively. The absorptive, luminescence as well as energetic properties of laser rods, having 4 mm diameter and the length equal 63 divided by 67 mm, have been investigated. It is shown that the energetic characteristics of the obtained crystals depend strongly on the annealing in the oxidizing atmosphere.

Paper Details

Date Published: 1 March 1995
PDF: 7 pages
Proc. SPIE 2202, Laser Technology IV: Research Trends, Instrumentation, and Applications in Metrology and Materials Processing, (1 March 1995); doi: 10.1117/12.203278
Show Author Affiliations
Zygmunt Frukacz, Institute of Electronic Materials Technology (Poland)
Jaroslaw Kisielewski, Institute of Electronic Materials Technology (Poland)
Zygmunt Mierczyk, Military Univ. of Technology (Poland)
Waldemar Zendzian, Military Univ. of Technology (Poland)


Published in SPIE Proceedings Vol. 2202:
Laser Technology IV: Research Trends, Instrumentation, and Applications in Metrology and Materials Processing
Wieslaw L. Wolinski; Zdzislaw Jankiewicz; Jerzy K. Gajda; Bohdan K. Wolczak, Editor(s)

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