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

Michal Nemec; Helena Jelínková; Jan Šulc; Karel Nejezchleb; Václav Škoda

doi:10.1117/12.840370

17 February 2010 Coherently pumped Er:YAlO₃ lasers

Michal Nemec, Helena Jelínková, Jan Šulc, Karel Nejezchleb, Václav Škoda

Proceedings Volume 7578, Solid State Lasers XIX: Technology and Devices; 75782C (2010) https://doi.org/10.1117/12.840370
Event: SPIE LASE, 2010, San Francisco, California, United States

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.

Citation Download Citation

Michal Nemec, Helena Jelínková, Jan Šulc, Karel Nejezchleb, and Václav Škoda "Coherently pumped Er:YAlO₃ lasers", Proc. SPIE 7578, Solid State Lasers XIX: Technology and Devices, 75782C (17 February 2010); https://doi.org/10.1117/12.840370

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