کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1540575 | 996663 | 2008 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Photorefractive properties of paraelectric potassium lithium tantalate niobate crystal doped with iron
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
We report the successful growth of paraelectric potassium lithium tantalate niobate (KLTN) single crystal doped with iron. Detailed investigations have been made on the photorefractive properties of the as-grown crystal. The key parameters such as space-charge field, grating response time, photorefractive sensitivity and sign of the dominant charge carrier were obtained by two-wave mixing technique. 1.7Â mm thick sample exhibits a high diffraction efficiency of 78% at the external field of 3.3Â kV/cm and a sensitivity of 1.49Â ÃÂ 10â10E0Â cm2/J. The two-wave mixing gain coefficient increases linearly with external field, and reaches a large value of 19.4Â cmâ1 at 4Â kV/cm. Based on experimental results, iron is an effective dopant to KLTN which shows high diffraction efficiency and two-wave mixing gain coefficient.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics Communications - Volume 281, Issue 6, 15 March 2008, Pages 1720-1724
Journal: Optics Communications - Volume 281, Issue 6, 15 March 2008, Pages 1720-1724
نویسندگان
Hao Tian, Zhongxiang Zhou, Dewei Gong, Haifeng Wang, Yongyuan Jiang, Chunfeng Hou,