We present a novel gravito-optical trap (GOT) consisting of a dark hollow-divergent laser beam (DHB) either from a collimated and focused doughnut beam or from the output beam of the LP/sub 01/ mode in a hollow optical fiber. The cold atoms are loaded into the DHB from a magneto-optical trap (MOT). As the atoms bounce in the DHB, they experience Sisyphus cooling and geometrical cooling induced by the blue detuned DHB and a very weak repumping beam propagating downward into the DHB. The coupling of the three-level atom and the DHB forms dressed states.
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机译：我们提出了一种新型的重力光阱（GOT），它由来自中空聚焦光纤的LP / sub 01 /模式的准直聚焦的甜甜圈光束或LP / sub 01 /模式的输出光束组成的深色中空发散激光束（DHB）组成。冷原子从磁光阱（MOT）加载到DHB中。当原子在DHB中弹跳时，它们会受到蓝色失谐DHB和向下传播到DHB中的非常弱的反射光束的诱导而产生的西西弗斯冷却和几何冷却。三能级原子与DHB的耦合形成了修整状态。
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