基于表面等离激元的光钟原子束准直器的设计

Design of a collimator for atom beams based on surface plasmon plariton using in an optical clock

在时间的精确测量领域,超冷原子光晶格钟具有最佳的精确性和稳定性,但其中的原子束准直器需要进行优化设计。本文依据光钟系统微型化的切实需要,利用表面等离激元效应对局部电磁场的增强效应,设计了新型的银-石英复合结构的准直器,并对器件的内部光场和准直效果做了理论分析和数值模拟。

In the field of precise measurement for time,an ultra-cold atomic optical lattice clock has the best accuracy and stability,but the design of the collimator for atom beams needs to be optimized.For the practical need of miniaturization on the basis of optical clock system,and using the enhancement effect of surface plasmon acting on the local electromagnetic field,we designed a kind of collimator with complex structure of silver-quartz,and made the theoretical analysis and numerical simulation for the Internal light field and collimation effect in this device.