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Proceedings Paper

Optical and laser characterization of 2% Nd:YAG ceramics elements
Author(s): Zdzislaw Librant; Helena Węglarz; Anna Wajler; Henryk Tomaszewski; Tadeusz Łukasiewicz; Jan K. Jabczyński; Waldemar Zendzian; Jacek Kwiatkowski
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Paper Abstract

We report on the first, promising production of Nd:YAG ceramics made in Poland. The Nd:YAG ceramics was produced by a solid-state reaction of high-purity (4N) nanometric oxides powders i.e. Al2O3, Y2O3 and Nd2O3. After sintering process mean grain sizes of 2%Nd:YAG samples were about 20 μm and transparency of its were comparable to 0.9% Nd:YAG single crystal. Two types of active elements: rods and slabs were fabricated and characterized in several diode pumping schemes. In end pumping configuration as a pump source 20-W fiber coupled laser diode operating in low duty cycle regime (1 ms pump duration /20 Hz) was deployed. In the best case, 3.7 W of output power for 18 W of absorbed pump power, M2 <1.4 were demonstrated for uncoated ceramics Nd:YAG rod of φ4x3mm size in preliminary experiments. For the ceramics of two times lower Nd dopant level above 30% slope efficiency was achieved. In case of slab ceramic side pumped by 600-W laser diode stack above 12 W was demonstrated with slope efficiency of 3.5%.

Paper Details

Date Published: 22 April 2008
PDF: 9 pages
Proc. SPIE 6998, Solid State Lasers and Amplifiers III, 69981A (22 April 2008); doi: 10.1117/12.780518
Show Author Affiliations
Zdzislaw Librant, Institute of Electronic Materials Technology (Poland)
Helena Węglarz, Institute of Electronic Materials Technology (Poland)
Anna Wajler, Institute of Electronic Materials Technology (Poland)
Henryk Tomaszewski, Institute of Electronic Materials Technology (Poland)
Tadeusz Łukasiewicz, Institute of Electronic Materials Technology (Poland)
Jan K. Jabczyński, Military Univ. of Technology (Poland)
Waldemar Zendzian, Military Univ. of Technology (Poland)
Jacek Kwiatkowski, Military Univ. of Technology (Poland)

Published in SPIE Proceedings Vol. 6998:
Solid State Lasers and Amplifiers III
Jonathan A. Terry; Thomas Graf; Helena Jelínková, Editor(s)

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