Extraordinary refractive-index increase in lithium niobate caused by low-dose ion implantation

被引：0
|
作者：
Hu, Hui [1 ]
Lu, Fei [1 ]
Chen, Feng [1 ]
Shi, Bo-Rong [1 ]
Wang, Ke-Ming [1 ]
Shen, Ding-Yu [2 ]
机构：
[1] Department of Physics, Shandong University, Ji'nan 250100, China
[2] MOE Key Lab. of Heavy Ion Physics, Peking University, Bejing 100871, China
来源：
Applied Optics | 2001年 / 40卷 / 22期
关键词：
Crystal lattices - Ion implantation - Light polarization - Optical waveguides - Refractive index - Rutherford backscattering spectroscopy;
D O I：
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学科分类号：
摘要：
Multienergy Cu+ions with total dose of ∼1014ions/cm2were implanted into LiNbO3crystals to form a nearly homogenous damage profile from the sample surface to the end of the ions' track. The extraordinary refractive-index enhancement was found in the damage region by observation of the dark mode. The extraordinary index showed an increasing trend until the ion dose reached a critical value. The largest index enhancement was ∼0.0132. By use of low-dose ion implantation, we determined that the decreased spontaneous polarization caused the extraordinary index increase. © 2001 Optical Society of America.
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页码：3759 / 3761
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