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1995•Radiation effects and defects in solidsRequires access

Excited state absorption of Fe3+in garnet crystal

V. Lupeǐ, S. Hartung, Günter Huber

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Abstract

The excited state absorption (ESA) from the metastable level 4T1 (4G) of Fe3+ in tetrahedral sites of garnets is reported. The spectra show strong lines due to spin allowed transitions to other excited spin-quartet states. It is also shown that this ESA could be strongly reduced if the metastable level could is used as donor level in the process of sensitaization of rare earths ions (such as Tm3+) by Fe3+.

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What this paper is about

The excited state absorption (ESA) from the metastable level 4T1 (4G) of Fe3+ in tetrahedral sites of garnets is reported. The spectra show strong lines due to spin allowed transitions to other excited spin-quartet states. It is also shown that this ESA could be strongly reduced if the metastable level could is used as donor level in the process of sensitaization of rare earths ions (such as Tm3+) by Fe3+.

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Available abstract

The excited state absorption (ESA) from the metastable level 4T1 (4G) of Fe3+ in tetrahedral sites of garnets is reported. The spectra show strong lines due to spin allowed transitions to other excited spin-quartet states. It is also shown that this ESA could be strongly reduced if the metastable level could is used as donor level in the process of sensitaization of rare earths ions (such as Tm3+) by Fe3+.

Key concepts: Excited state, Metastability, Ion, Atomic physics, Absorption (acoustics), Crystal (programming language), Absorption spectroscopy, Spectral line

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