کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1484747 | 991642 | 2008 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Erbium doped fluoride glass–ceramics waveguides fabricated by PVD Erbium doped fluoride glass–ceramics waveguides fabricated by PVD](/preview/png/1484747.png)
Transparent amorphous and glass–ceramics waveguides in the system ZrF4–LaF3–ErF3–AlF3 (ZELA) have been fabricated by physical vapor deposition (PVD). The ceramming process was studied by means of X-ray diffraction and transmission electron microscopy for different deposition temperatures. With increasing deposition temperature, formation of LaxEr1−xF3 nanocrystals with x ∼ 0.3 was observed. The decay curves of the 4I13/2 level in the glass–ceramics with 14.5 mol% Er3+ gave evidence of the presence of erbium both in the amorphous matrix (τ = 8.6 ms) and in the crystal phase (τ = 2.2 ms). The decrease of lifetime was due to clustering of erbium incorporated in LaF3 crystal lattice. No significant increase of attenuation loss was detected after waveguide cerammization (1.3 dB/cm at 1304 nm).
Journal: Journal of Non-Crystalline Solids - Volume 354, Issue 30, 15 July 2008, Pages 3586–3591