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Optica Publishing Group
  • Advanced Solid State Lasers
  • OSA Proceedings Series (Optica Publishing Group, 1995),
  • paper SC12

Concentration Quenching and Upconversion of Neodymium Ions in LaSc3(BO3)4 and GdVO4 Crystals

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Abstract

Upconversion processes were quantitatively investigated in neodymium doped LaSc3(BO3)4 (LSB) and GdVO4 (GVO) crystals. Two different types of upconversion behaviour were observed in these crystals: for LSB the upconversion was found to be static with the upconversion microparameter C*da in the range of (0.5–1.1)×10−37 cm6/s, and for GVO upconversion is migration accelerated with the nonlinear macroparameter α = 1.2×10−15 cm3/s.

The methods of calculations of the nonlinear parameters are given. The influence of the upconversion on lasing is discussed.

© 1995 Optical Society of America

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