Far-off-resonance optical trapping of atoms.
Far-off-resonance optical trapping of atoms.
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DOI：
10.1103/physreva.47.r4567
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发表时间：
1993-06-01
期刊：
影响因子：
--
通讯作者：
Heinzen
中科院分区：
文献类型：
--
作者：
Miller;Cline;Heinzen
作者将~（85）Rb原子限制在一个光偶极力阱中，其共振失谐量可达65 nm。无需额外冷却即可获得200 ms的约束时间，仅受背景气体碰撞的限制。一个典型的陷阱包含1300个原子，温度为0.4 mK，峰值密度为8* 1011 cm 3。作者测量到被捕获原子的自发光子散射率小于1.6* 103 s-1，对应于低于0.6 mK/s的反冲加热率。远失谐的陷阱限制原子与强大的，几乎保守的光学力和可以忽略不计的原子激发。
The authors confine85Rb atoms in an optical dipole force trap with a very large detuning from resonance of up to 65 nm. Confinement times of 200 ms, limited only by background-gas collisions, are obtained without additional cooling. A typical trap contains 1300 atoms at a temperature of 0.4 mK and a peak density of 8*1011cm3. The authors measure spontaneous photon scatter rates of the trapped atoms to be less than 1.6*103s1, corresponding to recoil heating rates below 0.6 mK/s. The far-detuned trap confines atoms with a strong, nearly conservative optical force and negligible atomic excitation.