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提出了产生三光学势阱的新方案,在该方案中用液晶空间光调制器制作相位型闪耀光栅,单色相干光照明,产生按等边三角形分布的三个光学势阱,三个光阱光强大小分布相同,调节空间光调制器的相位分布,可以改变光阱的相对位置,实现三光阱到单个光阱、两光阱合并为一个光阱等演变及其反向演变,调节过程简单、方便.根据现有空间光调制器性能和尺寸,模拟设计光栅,计算三光阱的光强分布和调控过程中光强的变化,结果表明:用一般功率的激光照明,能够得到具有较大峰值光强和较高光强梯度的可调三光阱,在原子和分子光学实验研究中有多种重要的应用.
A new scheme of generating three optical potential wells is proposed. In this scheme, a phase-type blazed grating is fabricated using a liquid crystal spatial light modulator, monochromatic coherent light is illuminated, three optical potential wells are generated, distributed in equilateral triangles, and three light traps Light intensity distribution of the same size, adjust the spatial light modulator phase distribution, you can change the relative position of optical traps, to achieve three optical traps to a single optical trap, two optical traps merged into a light trap evolution and its reverse evolution, the adjustment process is simple , Convenient.According to the performance and size of the existing spatial light modulator, the grating is simulated to calculate the light intensity distribution and the light intensity in the process of three-well trap. The results show that with general power laser illumination, The tunable triplet trap of light intensity and higher intensity gradient has many important applications in atomic and molecular optics experiments.