闪耀光栅产生光学势阱阵列

摘要

A new scheme of generating the array of optical trap is proposed by using liquid-crystal spatial light modu-lator(SLM) to fabricate blazed grating. The and array of optical trap can be obtained by optimally designing the phase change parameters of the grating. The phase grating is simulatingly designed according to the technical parameters of the SLM. The intensity distributions of the array of optical trap are calculated and the results show that optical traps with very high peak value of intensity and intensity gradient as well as uniform intensity distributions can be obtained. High optical dipole potentials and dipole forces can be achieved for trapping cold atoms or molecules. It has good prospect of applications in the experimental study of the atoms in optical lattices.%　　提出用液晶空间光调制器制作闪耀光栅产生光学势阱的新方案，优化设计光栅的相位变化参数，用单束激光照明，产生3×3和4×4等光强光学势阱阵列。根据现有空间光调制器性能和尺寸，模拟设计光栅，计算光阱阵列光强分布。研究结果表明：所产生的光阱阵列中各光阱具有较高的峰值光强和光强梯度，且光强分布均匀；对冷原子或冷分子囚禁有较高的光学偶极势和较强的偶极力，在原子光学晶格的实验研究中具有很好的应用前景。