Temperature dependent measurement of absorption and emission cross sections for various Yb[sup]3+[/sup] doped laser materials

J. Körner; J. Hein; M. Kahle; H. Liebetrau; M. Lenski; M. Kaluza; M. Loeser; M. Siebold

doi:10.1117/12.887410

9 June 2011 Temperature dependent measurement of absorption and emission cross sections for various Yb³⁺ doped laser materials

J. Körner, J. Hein, M. Kahle, H. Liebetrau, M. Lenski, M. Kaluza, M. Loeser, M. Siebold

Author Affiliations +

Proceedings Volume 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 (2011) https://doi.org/10.1117/12.887410
Event: SPIE Optics + Optoelectronics, 2011, Prague, Czech Republic

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. Hein, M. Kahle, H. Liebetrau, M. Lenski, M. Kaluza, M. Loeser, and 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); https://doi.org/10.1117/12.887410

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