Abstract

The laser-induced vacuum-ultraviolet fluorescence spectra of KY₃F₁₀:Nd³⁺ (KYF:Nd) and YF₃:Nd³⁺ (YF:Nd) single crystals pumped by a pulsed-discharge molecular F₂ laser at 157 nm were obtained. A number of new fluorescence peaks were observed and were assigned to the 4f²5d → 4f³ dipole-allowed transitions of the Nd³⁺ ion. The absorption spectra of LiYF₄:Nd³⁺ (YLF:Nd), KYF:Nd, and YF:Nd crystal samples in the vacuum-ultraviolet spectral regions were also obtained. Finally, the splitting of the states of the 4f²5d configuration of the Nd³⁺ ion, which is due to the crystal field, was observed in all the crystal samples.

© 1995 Optical Society of America

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