论文标题
在存在强透镜的情况下，原子合体的分散性检测
Dispersive detection of atomic ensembles in the presence of strong lensing
论文作者
论文摘要
我们在实验和理论上研究了在致密的，空间均匀的末世原子气体中抗谐振光的中等内繁殖作用。将重点放在频率调制光谱作为原子的分散检测工具上，我们观察到，由于原子的集体分散响应，局部原子集合局部提出的折射梯度 - 点数镜头也可以显着改变分散信号的解释。我们确定了区分薄和厚的原子透镜的标准，从而导致以衍射为主和镜头主导的探针束的控制。我们的发现与用于光传播的实验数据和实验数据和解决方案一致。我们的研究为超电原子的分散性，微不足道的光学检测和成像方案提供了重要的实用见解，对于在众多应用中选择最佳参数方案非常有价值。
We experimentally and theoretically investigate in-medium propagation effects of off-resonant light in dense, spatially homogeneous ultacold atomic gases. Focussing on frequency modulation spectroscopy as the dispersive detection tool of atoms, we observe that the refractive gradient-index lenses presented by localised atomic ensembles can significantly modify the interpretation of the dispersive signal even for large probe detuning, owing to the collective dispersive response of the atoms. We identify criteria for distinguishing between thin and thick atomic lenses, leading to either diffraction-dominated and lensing dominated regimes for the outgoing probe beams. Our findings are consistent with experimental data and solutions of paraxial wave equation for light propagation. Our study provides important practical insights for dispersive, minimally intrusive optical detection and imaging schemes of ultracold atoms and will be valuable for choosing optimal parameter regimes in numerous applications.
