利用皮秒激光脉冲的受激光力

I. Bloch, F. Cremers, A. Goepfort, D. Haubrich, F. Lison, R. Wynands, D. Meschede
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引用次数: 0

摘要

利用锁模Ti:蓝宝石激光器的反传播皮秒激光脉冲所施加的受激力,我们能够将激光冷却的铯原子束沿着一维聚焦到探测区域原始宽度的57%左右。在脉冲重叠区域内外测量了力分布,发现与早期的理论预测一致。基于光学布洛赫方程,对原子与脉冲激光的相互作用作了简要的理论说明。
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Stimulated Light Forces Using Picosecond Laser Pulses
Using the stimulated force exerted by counterpropagating picosecond laser pulses from a mode-locked Ti:Sapphire laser we were able to focus a beam of laser-cooled cesium atoms along one dimension to about 57% of its original width in the detection zone. The force profile was measured outside and inside the overlap region of the pulses and found to be in agreement with an earlier theoretical prediction. A brief theoretical account of the interaction of atoms with pulsed laser light based on the optical Bloch equations is given.
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