کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1484096 991622 2009 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Brillouin spectroscopy of Nd–Ge co-doped silica fibers
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Brillouin spectroscopy of Nd–Ge co-doped silica fibers
چکیده انگلیسی

The effect of Nd-doping on both the longitudinal acoustic velocity and material damping coefficient (Brillouin spectral width) of silica fiber are measured. We find that Nd-doping results in anomalously large changes in the acoustic properties of SiO2, such as that material damping is greatly exacerbated by the incorporation of Nd. We find that the spectral width increases by about 151% per wt% of Nd2O3 (for small [Nd]). This is very large compared to the effect of Ge-doping, as observed in this work. This may result from poor coordination in the SiO2/GeO2 matrix, and may be considerably different with the use of co-dopants such as Al that tend to improve the solubility of the rare earths. The acoustic velocity is found to decrease at a rate of about 6.1% per wt% of Nd2O3.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Crystalline Solids - Volume 355, Issue 7, 15 March 2009, Pages 403–413
نویسندگان
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