Spectroscopic properties of anisotropic absorption in a neodymium-doped YAlO{sub 3} laser crystal
- Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, P.O. Box 912, Beijing 100083, People`s Republic of (China)
- Department of Physics, Xiamen University, Xiamen 361005, People`s Republic of (China)
Absorption spectra of YAlO{sub 3}:Nd for the three crystallographic axes are investigated at room temperature. The spectral strengths indicate that the absorption coefficient of YAlO{sub 3}:Nd is anisotropic. The anisotropy of the local electric field acting on the rare-earth ion in a laser crystal is considered. An extended Judd{endash}Ofelt theory is applied to calculate the absorption cross sections and oscillator strengths of the electric-dipole transitions in the different principal directions. Three groups of the phenomenological parameters are derived from a least-squares-fitting procedure. We also analyze theoretically the anisotropy of the optical absorption of YAlO{sub 3}:Nd crystal in detail. {copyright} {ital 1997 American Institute of Physics.}
- OSTI ID:
- 496385
- Journal Information:
- Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 10 Vol. 81; ISSN JAPIAU; ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
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