空芯光纤蓝失谐HE_(11)模原子导引（英文）  

Atomic waveguides using blue-detuned HE_(11) guided mode in hollow optical fiber

作　　者：赵连洁[1] 王长峰[1] 严小军[1] 张国万[1] 张安宁[1] 

机构地区：[1]北京航天控制仪器研究所中国航天科技集团公司,北京100039

出　　处：《中国惯性技术学报》2016年第5期643-648,共6页Journal of Chinese Inertial Technology

基　　金：国家自然科学基金(6150101,11304007)~~

摘　　要：基于矢量模型,从麦克斯韦方程组出发精确计算了空芯光纤中HE_(11)模的电磁场分布,并分析了电磁场各分量的传播特性。研究表明,HE_(11)模强度沿光纤横截面呈环状分布,电场分量E_r和E_φ相位相同,磁场分量H_r和H_φ相位相反。以^(85)Rb原子为例,当入射激光功率为1 W,失谐量为1 GHz,空芯光纤空心区半径为0.7mm时,计算了空芯光纤中HE_(11)模的绝对强度分布和光学势分布,计算发现空心区最大光学势为14.9 mK,远大于标准磁光阱中^(85)Rb原子温度(120mK),因此空芯光纤中的HE_(11)模可用于导引^(85)Rb原子。空芯光纤原子导引有望应用于原子干涉领域。Based on the vector model of Maxwell＇s equations, we exactly calculated the electromagnetic field distributions of HE_（11） mode in a hollow optical fiber, and mainly discussed the characteristics of their components. We found that the intensity distribution of HE_（11） mode was a doughnut-like pattern in the cross section, and the phases of the two electric-field radial components E_r and E_φ were uniform, but the phases of the two magnetic-field radial components H_r and H_φ were reversed. We also exactly calculated the absolute intensity and the corresponding optical potential distributions in a typical hollow optical fiber for ^（85）Rb atom guiding, and found that, by using a incidence light（1 W） and detuning（1 GHz） blue-detuned HE_（11） guided mode with a 0.7 mm-radius hollow optical fiber, the maximum optical potential in the hollow region is 14.9 mK, which is far greater than the temperature（120 mK） of ^（85）Rb atoms in a standard magneto-optical trap（MOT）. Thus the HE_（11） mode is absolutely adequate to guide ^（85）Rb atoms in this typical hollow optical fiber. Atomic guiding in a hollow optical fiber can be widely used in the field of atomic interference.

关 键 词：原子导引 消逝波 矢量模 弱波导近似 空芯光纤 

分 类 号：U666.1[交通运输工程—船舶及航道工程]