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arXiv quant-ph/9907085quant-ph
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单原子激光器的输出光谱

Output Spectrum of Single-Atom Lasers

J. P. Clemens, P. R. Rice, L. M. Pedrotti

摘要:

我们考虑由微腔中的单个原子组成的激光器,具有相干或非相干泵浦。我们考虑三个和四个级别的增益计划,并检查这样的激光器的输出光谱。我们发现,线宽一般尺度作为光子数的倒数。对于大的原子-场耦合,得到了真空-拉比偶极结构。在三能级情况下,这种真空拉比分裂只在腔内光子数很小的情况下才明显,而在大的泵浦情况下则消失。在四能级方案中,真空拉比结构出现在一个非零的泵的水平,并保持大泵,即使当腔内光子数大于1。这种行为是利用量子轨迹的方法来解释。

英文摘要:

We consider a laser composed of a single atom in a microcavity, with a coherent or incoherent pump. We consider both three- and four-level gain schemes, and examine the output spectrum of such lasers. We find that the linewidth generally scales as the inverse of the photon number. For large atom-field coupling, a vacuum-Rabi doublet structure is obtained. In the three-level case, this vacuum-Rabi splitting is apparent only for small intracavity photon numbers, and vanishes for large pumps. In the four-level scheme, the vacuum-Rabi structure appears at a nonzero pump level, and is maintained for large pumps, even when the intracavity photon number is larger than unity. This behavior is explained utilizing the quantum trajectory approach.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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