caa a22 4500 445372532 CHVBK 20180317142952.0 cr unu---uuuuu 170323e20110301xx s 000 0 eng 10.1007/s00340-010-4369-z doi (NATIONALLICENCE)springer-10.1007/s00340-010-4369-z Photoconductivity in Yb-doped oxides at high excitation densities [Elektronische Daten] [C. Brandt, S. Fredrich-Thornton, K. Petermann, G. Huber] Photoconductivity has been found in the dielectric laser materials Yb3+:YAG and Yb3+:Lu2O3 under 940nm irradiation with an unexpected high photocurrent up to several 100 nanoampères. The nonlinear intensity dependence points to the occurrence of a cooperative upconversion mechanism with 2-3 excited Yb3+-ions in YAG and 2 excited Yb3+-ions in Lu2O3 being involved. According to the results two tentative models of this upconversion process are discussed. Springer-Verlag, 2011 Brandt C. Institute of Laser-Physics, University of Hamburg, Luruper Chaussee 149, 22761, Hamburg, Germany aut Fredrich-Thornton S. Institute of Laser-Physics, University of Hamburg, Luruper Chaussee 149, 22761, Hamburg, Germany aut Petermann K. Institute of Laser-Physics, University of Hamburg, Luruper Chaussee 149, 22761, Hamburg, Germany aut Huber G. Institute of Laser-Physics, University of Hamburg, Luruper Chaussee 149, 22761, Hamburg, Germany aut Applied Physics B Springer-Verlag 102/4(2011-03-01), 765-768 0946-2171 102:4<765 2011 102 340 https://doi.org/10.1007/s00340-010-4369-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00340-010-4369-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Brandt C. Institute of Laser-Physics, University of Hamburg, Luruper Chaussee 149, 22761, Hamburg, Germany aut NATIONALLICENCE 700 1- Fredrich-Thornton S. Institute of Laser-Physics, University of Hamburg, Luruper Chaussee 149, 22761, Hamburg, Germany aut NATIONALLICENCE 700 1- Petermann K. Institute of Laser-Physics, University of Hamburg, Luruper Chaussee 149, 22761, Hamburg, Germany aut NATIONALLICENCE 700 1- Huber G. Institute of Laser-Physics, University of Hamburg, Luruper Chaussee 149, 22761, Hamburg, Germany aut NATIONALLICENCE 773 0- Applied Physics B Springer-Verlag 102/4(2011-03-01), 765-768 0946-2171 102:4<765 2011 102 340 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer