16 March 2016 Comparative study of broadband, narrowband and multi-wavelength resonant pumping of Er:YAG lasers
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Abstract
The multiplicity of narrow absorption lines of erbium ions in the spectral range from 1450 to 1560 nm is exploited for the development of a highly efficient Er:YAG laser emitting at 1645 nm. We present a comparative analysis on the performance of resonantly pumped Er:YAG lasers using different pumping schemes including both broadband and narrowband sources as well as different pump wavelengths. An absorption efficiency of up to 96% is achieved when pumping with narrow bandwidth sources. Furthermore, multi-wavelength pumping allows for both substantial power scaling and reduction of the laser threshold, thus providing a low power-consuming laser system.
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H. Fritsche, O. Lux, M. Gaertner, A. Grohe, W. Gries, H. J. Eichler, "Comparative study of broadband, narrowband and multi-wavelength resonant pumping of Er:YAG lasers", Proc. SPIE 9726, Solid State Lasers XXV: Technology and Devices, 972606 (16 March 2016); doi: 10.1117/12.2213321; https://doi.org/10.1117/12.2213321
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