Diode-Pumped Passively Q-Switched Nd:YAG Ceramic Laser with a Cr super(4+):YAG Crystal-Satiable Absorber

Transparent polycrystalline Nd:YAG ceramics were fabricated by solid-state reactive sintering a mixture of commercial Al sub(2)O sub(3),Y sub(2)O sub(3), and Nd sub(2)O sub(3) powders. The powders were mixed in ethanol and doped with 0.5 wt% tetraethoxysilane, dried, and pressed. Pressed samples wer...

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Published inJournal of the American Ceramic Society Vol. 90; no. 5; pp. 1629 - 1631
Main Authors Wu, Yusong, Li, Jiang, Pan, Yubai, Liu, Qian, Guo, Jingkun, Jiang, Benxue, Xu, Jun
Format Journal Article
LanguageEnglish
Published 01.05.2007
Subjects
Ceramics
Crystals
Ethanol
Ethyl alcohol
Grain size
Laser outputs
Lasers
Pumps
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Summary:Transparent polycrystalline Nd:YAG ceramics were fabricated by solid-state reactive sintering a mixture of commercial Al sub(2)O sub(3),Y sub(2)O sub(3), and Nd sub(2)O sub(3) powders. The powders were mixed in ethanol and doped with 0.5 wt% tetraethoxysilane, dried, and pressed. Pressed samples were sintered at 1750C in vacuum. Transparent fully dense samples with average grain sizes of 10 km were obtained. The 1 at.% Nd:YAG ceramic was used to research passively Q-switched laser output with a Cr super(4+):YAG crystal as a saturable absorber. An average output power of 94 mW with a pulse width of 50 ns was obtained when the incident pump power was 750 mW. The slope efficiency was 13%. The pulse energy is 5 kJ, and the peak power is about 100 W.
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ISSN:0002-7820
1551-2916
DOI:10.1111/j.1551-2916.2007.01564.x