کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9778078 | 1510570 | 2005 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Semi-transparent barium borate surface crystallization for second harmonic generation
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
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چکیده انگلیسی
Glasses from the barium borate system, xB2O3-(100 â x)BaO (50 < x < 68 mol%), with a refractive index of 1.658-1.645 (λ = 435.8 nm) and densities ranging from 3.85 g cmâ3 to 3.75 g cmâ3, were synthesized by a conventional melting-quenching method. 75 Ã 75 Ã 5 mm3 samples were prepared from the barium borate glass, which was transparent in the visible region and very stable. The characteristic temperatures of the BBO60 (x = 60) glass, which were determined by differential thermal analysis at 10 °C minâ1, were Tg = 570 °C, Tx = 671 °C, and Tp = 685 °C (±2 °C). The glass samples were then heat-treated for controlled crystallization. 57B2O3-43BaO planar samples, measuring 15 Ã 15 Ã 3 mm3, heat-treated at 610 °C for periods varying from 24 h to 60 h, exhibited a surface crystallization mechanism. The crystalline layers were analyzed by X-ray diffraction and identified as β-BaB2O4. These crystallized layers showed second harmonic generation (SHG) when irradiated by a 1064 nm laser beam (Nd:YAG) with 300 mW of power. The SHG intensity was compared with a Y-oriented single crystal α-quartz plate.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Crystalline Solids - Volume 351, Issues 16â17, 1 June 2005, Pages 1372-1376
Journal: Journal of Non-Crystalline Solids - Volume 351, Issues 16â17, 1 June 2005, Pages 1372-1376
نویسندگان
A.L. Martinez, R. Lebullenger, C.A.C. Feitosa, A.C. Hernandes,