光通信研究Issue(1)：49-52,4.
铌酸锂晶体中写入晶格周期与衍射效率的关系
Relationship between writing lattice period and diffraction efficiency in lithium niobate crystals
摘要
Abstract
In order to obtain photonic lattices with high diffraction efficiency,we write a one-dimensional photonic lattice into LiNbO3:Fe crystal by using the method of light-induced photonic lattices.Furthermore,we study the minimum value of the density of the written crystal lattice period and the relationship between the crystal lattice period and diffraction efficiency,and compare the cases when lasers at different wavelengths are used to write.Experimental results show that when the writing pe-riod is the minimum,it is one half of the incident wavelength and at this moment two beams of incident light form a standing wave.We find that the diffraction efficiency is higher within the included angle between the two teams of 20°and lower over 25°.We conclude that in order to obtain photonic lattices with high diffraction efficiency,the included angle should be within 20°and short wavelength lasers used as the irradiation light source.关键词
非线性光学/光诱导光子晶格/掺铁铌酸锂晶体/晶格周期/衍射效率Key words
nonlinear optics/light-induced photonic lattices/LiNbO3∶Fe crystal/crystal lattice period/diffraction efficiency分类
数理科学引用本文复制引用
武一洁,杨立森,王龙飞,李永辉,逯文婷,李强,施慧渊..铌酸锂晶体中写入晶格周期与衍射效率的关系[J].光通信研究,2014,(1):49-52,4.基金项目
国家自然科学基金资助项目(60467002) （60467002）
内蒙古自然科学基金资助项目(2013MS0926) （2013MS0926）
