9 June 2011 Temperature dependent measurement of absorption and emission cross sections for various Yb3+ doped laser materials
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Abstract
For laser performance simulations, optical properties of applied active materials have to be exactly known. Here we report on temperature dependent emission and absorption cross section measurements for Yb:YAG, Yb:CaF2 and Yb:FP15-glass. The temperature of the samples was aligned in steps of 20 K between 100 K and room temperature with a liquid nitrogen driven cryostat. Absorption spectra were obtained with a fiber coupled white light source and fluorescence spectra by excitation with a fiber coupled 10W laser diode at 970 nm. All spectral measurements were performed with a scanning spectrum analyzer, providing a spectral resolution down to 0.05 nm. By applying the McCumber relation in combination with the Fuchtbauer-Ladenburg method, we were able to obtain a valid emission cross section over the whole range of interest from the measured data.
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J. Körner, J. Körner, J. Hein, J. Hein, M. Kahle, M. Kahle, H. Liebetrau, H. Liebetrau, M. Lenski, M. Lenski, M. Kaluza, M. Kaluza, M. Loeser, M. Loeser, M. Siebold, M. Siebold, } "Temperature dependent measurement of absorption and emission cross sections for various Yb3+ doped laser materials", Proc. SPIE 8080, Diode-Pumped High Energy and High Power Lasers; ELI: Ultrarelativistic Laser-Matter Interactions and Petawatt Photonics; and HiPER: the European Pathway to Laser Energy, 808003 (9 June 2011); doi: 10.1117/12.887410; https://doi.org/10.1117/12.887410
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