摘要
利用双孔振幅掩模的傅里叶变换法,在LiNbO3∶Fe晶体中制作了一维光子晶格,并用功率计测量其透射效率,测出满足Bragg衍射条件的带隙,分析了在角度域范围内干涉光场的时间、掩模的孔间距对禁带宽度的影响.实验结果表明,辐照时间t=35 min、掩模孔间距2a=8 mm时,LiNbO3∶Fe晶体的带宽达到最大.
In this paper,using Fourier transformation method of amplitude mask with two holes,we have made one-dimensional photonic lattice in LiNbO3∶Fe crystal,and measured the transmission efficiency by using power meter.We measured the band gap which met Bragg diffraction＇s condition,and analyzed the time of interference light field and mask the hole spacing have a certain influence on bandwidth in the angle domain.The experiment result indicates LiNbO3∶Fe crystal attains maximum bandwidth under the condition of irradiation time t=35min and mask hole spacing 2a=8mm.
出处
《内蒙古师范大学学报（自然科学汉文版）》
CAS
2010年第6期580-582,586,共4页
Journal of Inner Mongolia Normal University(Natural Science Edition)
基金
国家自然科学基金资助项目(60467002)
内蒙古自然科学基金资助项目(2009MS0905)
关键词
双孔振幅掩模
傅里叶变换
LiNbO3∶Fe晶体
透射效率
带隙
带宽
Fourier transformation method of amplitude mask with two holes
LiNbO3∶Fe Crystal
transmission efficiency
band gap
bandwidth
