Development of infrared fiber lasers at 1555 nm and at Er-doped zinc-tellurite 
glass fiber

Anashkina, E. A.; Andrianov, A. V.; Dorofeev, V. V.; Kim, A. V.; Koltashev, V. V.; Leuchs, Gerd; Motorin, S. E.; Muravyev, S. V.; Plekhovich, A. D.

doi:10.1016/j.jnoncrysol.2019.119667

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Development of infrared fiber lasers at 1555 nm and at Er-doped zinc-tellurite glass fiber

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Leuchs, Gerd
Leuchs Emeritus Group, Emeritus Groups, Max Planck Institute for the Science of Light, Max Planck Society;

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https://www.sciencedirect.com/science/article/pii/S0022309319305381
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Citation

Anashkina, E. A., Andrianov, A. V., Dorofeev, V. V., Kim, A. V., Koltashev, V. V., Leuchs, G., et al. (2019). Development of infrared fiber lasers at 1555 nm and at Er-doped zinc-tellurite glass fiber. JOURNAL OF NON-CRYSTALLINE SOLIDS, 525: 119667. doi:10.1016/j.jnoncrysol.2019.119667.

Cite as: https://hdl.handle.net/21.11116/0000-000F-91E3-C

Abstract

We manufactured and characterized a low-loss gain fiber based on high-purity TeO2 -ZnO-La2O3-Na2O undoped glass for 100-mu m cladding and TeO2 -ZnO-La2O3-Na2O glass for 10-mu m core doped with 0.24 mol% Er2O3. To confirm that the produced fiber is a promising active element for the infrared range, we demonstrated experimentally broadband laser amplification and CW generation at the I-4(13/2) -> I-4(15/2) transition at 1555 nm with a single-mode diode pump at 975 nm at the I-4(15/2) -> I-4(11/2) transition. We developed a numerical model calibrated to the experimental data for prediction and optimization of laser characteristics in schemes with different parameters. The model describes single- wavelength lasing as well as dual-wavelength cascade lasing at 1555 nm and 2800 nm. It was shown numerically that for the optimized parameters, the maximum slope efficiency at 2800 nm at the I-4(11/2) -> I-4(13/2) transition can reach similar to 20%. The maximum calculated efficiency at 1555 nm exceeds 30%.