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  • Conference on Lasers and Electro-Optics
  • OSA Technical Digest (Optica Publishing Group, 1993),
  • paper CThS9

Infrared-to-visible upconversion in ErP5O14

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Abstract

Efficient infrared-to-visible upconversion in rare-earth compounds was first observed as early as in 1969.1,2 Two, three and four-photon processes were found responsible for blue, green or red fluorescence when doped crystals (e.g. BaLuF5:5% Yb3+, 3% Ho3+ or YsOCl7:Yb3+, Er3+) were irradiated with an Si-doped GaAs luminescent diode operating at a wave length of about 930 nm. Infrared- pumped visible lasers (operating at liquid nitrogen temperature) in Yb3+ or Er3+-doped crystals were demonstrated in Refs. 3 and 4. The rare-earth doped compounds contained a few percent of Yb3+ or Er3+ ions.

© 1993 Optical Society of America

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