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首页> 外文OA文献 >Switching from „absorption within transparency“ to “transparency within transparency” in an electromagnetically induced absorption dominated transition
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Switching from „absorption within transparency“ to “transparency within transparency” in an electromagnetically induced absorption dominated transition

机译：在电磁感应吸收主导的转变中，从“透明吸收”转变为“透明度内透明度”

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摘要

The absorption of a resonant coupling laser driving a closed degenerate two-level system in an atomic cesium beam was investigated as a function of the detuning of a second laser probing the same transition. The measurements were performed for four different polarization combinations of the two laser beams. Except for the beams of counterrotating polarizations all coupling-laser absorption profiles showed “absorption within transparency,” i.e., the absorption in the region around the two-photon resonance was smaller than the absorption corresponding to the one-photon transition induced by the coupling laser, and an extra absorption peak was observed on this curve at the two-photon resonance. With regard to the beams of counterrotating polarizations we observed a switch from absorption within transparency to “transparency within transparency” when the probe-laser power exceeded the constant coupling-laser power. In other words, the cesium ensemble became mostly transparent to the coupling-laser beam at the two-photon resonance.
机译：研究了在原子铯束中驱动封闭的简并两能级系统的共振耦合激光器的吸收与第二激光器探测相同跃迁的失谐的关系。对两个激光束的四种不同的偏振组合进行测量。除了反向旋转的偏振光束外，所有耦合激光的吸收曲线都显示出“透明内的吸收”，即，在双光子共振附近的区域中的吸收小于与耦合激光引起的单光子跃迁相对应的吸收。 ，在该曲线上在双光子共振处观察到一个额外的吸收峰。对于反向旋转的偏振光束，我们观察到当探测激光功率超过恒定耦合激光功率时，从透明内的吸收切换为“透明内的透明”。换句话说，铯集合体在双光子共振时对耦合激光束几乎变得透明。

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