1. Polarized spectral analysis of Ho3+ions in biaxial YAlO3crystal for 2 µm lasers
- Author
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Zhenping Yu, X.T. Yang, Baoquan Yao, Qin Dong, Guangjun Zhao, and Dunhua Cao
- Subjects
Acoustics and Ultrasonics ,Absorption spectroscopy ,Analytical chemistry ,chemistry.chemical_element ,Condensed Matter Physics ,Omega ,Spectral line ,Surfaces, Coatings and Films ,Electronic, Optical and Magnetic Materials ,Crystal ,chemistry ,Spectroscopy ,Holmium ,Absorption (electromagnetic radiation) ,Single crystal - Abstract
An Ho3+-doped YAlO3 (Ho : YAP) single crystal has been grown by the Czochralski technique. The polarized absorption spectra, polarized fluorescence spectra and fluorescence decay curve of the crystal are measured at room temperature. The spectroscopic parameters are calculated based on Judd-Ofelt theory, and the effective phenomenological intensity parameters Omega(2,eff), Omega(4,eff) and Omega(6,eff) are obtained to be 2.89 x 10(-20), 2.92 x 10(-20) and 1.32 x 10(-20) cm(2), respectively. The room-temperature fluorescence lifetime of the Ho3+ 5I(7) -> I-5(8) transition is measured to be 8.1 ms. Values of the absorption and emission cross-sections with different polarizations are presented for the I-5(7) manifold, and the polarized gain cross-section curves are also provided and discussed.
- Published
- 2009
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