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Nonlinear losses in photoconductive Yb:YAG laser materials: identification of photocarrier properties by non-steady-state photoEMF

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Abstract

We report on the investigation of the photocarrier sign and the excitation dynamics in Yb:YAG at 940 nm excitation wavelength by non-steady-state photo-electromotive force technique. Annealed crystals with 25 and 50 % Yb-doping concentration demonstrate hole conductivity, while 80 % Yb:YAG displays electron conductivity. A characteristic relaxation time of approximately 1 ms is observed, which corresponds to the lifetime of the excited Yb3+-ion.

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Authors and Affiliations

  1. Instituto Nacional de Astrofísica, Óptica y Electrónica, Apdo. Postal 51 y 216, CP 72000, Puebla, Mexico

    N. Korneev & P. Rodriguez-Montero

  2. Institut für Laser-Physik, Universität Hamburg, Luruper Chaussee 149, 22761, Hamburg, Germany

    U. Wolters, K. Petermann & G. Huber

Authors
  1. N. Korneev
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  2. P. Rodriguez-Montero
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  3. U. Wolters
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  4. K. Petermann
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  5. G. Huber
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Correspondence to U. Wolters.

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Korneev, N., Rodriguez-Montero, P., Wolters, U. et al. Nonlinear losses in photoconductive Yb:YAG laser materials: identification of photocarrier properties by non-steady-state photoEMF. Appl. Phys. B 117, 731–735 (2014). https://doi.org/10.1007/s00340-014-5888-9

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  • DOI: https://doi.org/10.1007/s00340-014-5888-9

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