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Proceedings Paper

Coherently pumped Er:YAlO[sub]3[/sub] lasers
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Paper Abstract

Er:YAlO3 crystals as active materials for coherent resonant pumping by Er:glass laser were investigated. The Er:YAP rods had 1 at.% concentration of Erbium/Yttrium (Er/Y) and were 10 mm or 20 mm in length. The output characteristics of the designed and constructed lasers, i.e., the spatial beam structure, temporal profile, and efficiency were derived. For 555 mJ incident Er:glass pump energy (1535 nm wavelength), the generated output energy was 20 mJ at the lasing wavelength 1623 nm. For comparison, three Er:YAG crystals with various Er/Y concentrations and lengths were also evaluated under the same conditions. These lasers generated energy at 1648 nm. The main advantage of resonantly pumped lasers is low quantum defect related with lower cooling demand. Therefore, with the used repetition rate 0.5 Hz, it was not necessary to cool the active crystals.

Paper Details

Date Published: 17 February 2010
PDF: 7 pages
Proc. SPIE 7578, Solid State Lasers XIX: Technology and Devices, 75782C (17 February 2010); doi: 10.1117/12.840370
Show Author Affiliations
Michal Nemec, Czech Technical Univ. in Prague (Czech Republic)
Helena Jelínková, Czech Technical Univ. in Prague (Czech Republic)
Jan Šulc, Czech Technical Univ. in Prague (Czech Republic)
Karel Nejezchleb, Crytur Ltd. (Czech Republic)
Václav Škoda, Crytur Ltd. (Czech Republic)

Published in SPIE Proceedings Vol. 7578:
Solid State Lasers XIX: Technology and Devices
W. Andrew Clarkson; Norman Hodgson; Ramesh K. Shori, Editor(s)

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