Radiative and Nonradiative Relaxation from 2F(2)5/2 and 4G7/2 Levels of Nd3+ Ions in Yttrium Oxide Crystals

Tasoltan T. Basiev; Alexi Yu. Dergachev; William M. Yen; Brian Tissue; Lizhu Lu

doi:10.1364/ASSL.1991.MT5

Advanced Solid State Lasers
OSA Proceedings Series (Optica Publishing Group, 1991),
paper MT5
•https://doi.org/10.1364/ASSL.1991.MT5

Radiative and Nonradiative Relaxation from ²F(2)_5/2 and ⁴G_7/2 Levels of Nd³⁺ Ions in Yttrium Oxide Crystals

Tasoltan T. Basiev, Alexi Yu. Dergachev, William M. Yen, Brian Tissue, and Lizhu Lu

Advanced Solid State Lasers 1991

Hilton Head, South Carolina United States
ISBN: 1-55752-179-4

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T. T. Basiev, A. Y. Dergachev, W. M. Yen, B. Tissue, and L. Lu, "Radiative and Nonradiative Relaxation from 2F(2)5/2 and 4G7/2 Levels of Nd3+ Ions in Yttrium Oxide Crystals," in Advanced Solid State Lasers, G. Dube and L. Chase, eds., Vol. 10 of OSA Proceedings Series (Optica Publishing Group, 1991), paper MT5.

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Abstract

Processes of energy relaxation from the ⁴G_7/2 and ²F(2)_5/2 levels of Nd³⁺ ions in yttrium oxide crystals Y₂O₃, YA10₃ and Y3AI5O12 are discussed in this paper. It was found out that energy relaxation from the ⁴G_7/2 level with minimal energy gap to the first lower lying manifold 1200 cm ⁻¹ is predominantly nonradiative with very high multiphonon relaxation rate 10⁸ – 10⁹ s⁻¹. The increase of nonradiative relaxation probability in studied crystals is in a good agreement with increase of phonon frequency cut-off of the crystal matrix. For the first time the luminescence spectra on the transitions from the ⁴G_7/2 level were measured in oxide crystals.

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