利用电磁感应透明效应(EIT)在87 Rb冷原子介质中进行了光学信号存储释放的实验研究。测量了信号光存储效率随冷却系统中再泵浦光功率的变化关系。结果表明:当再泵浦光从零开始增大时,存储效率随之增大而增大;再泵浦光功率超过一定强度时,存储效率开始降低。一个简单的分析说明了上述存储效率与再泵浦光强的关系。
By using electromagnetically induced transparency(EIT),we realized the optical signal storage and release in 87 Rb cold atom medium.We have got the curve of storage efficiency as a function of the repumping intensity in cooling system.Experimental results showed that:the storage efficiency increases with the repumping intensity,when it increases from zero;if the repumping intensity exceeds a certain intensity,the storage efficiency begins to decrease.A simple analysis interpreted the relationship between storage efficiency and the repumping intensity.