arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv physics/0204023physics.atom-phphysics.optics
收藏

用对照laser测量室温Rb蒸气中的亚自然线宽

Sub-natural linewidth in room-temperature Rb vapor using a control laser

Umakant D. Rapol, Ajay Wasan, Vasant Natarajan

摘要:

我们展示了两种方法获得亚自然线宽探测吸收通过室温Rb蒸汽。这两种技术都使用控制激光器来驱动从不同的基态的跃迁。相干驱动将激发态分裂成两个修饰态(Autler-Townes双峰),当控制激光器从共振失谐时,这两个修饰态具有不对称的线宽。在第一种技术中,激光器具有1.18 GHz的大失谐,以将线宽从560 MHz的多普勒宽度减小到5.1 MHz。在第二种技术中,我们使用反向传播的泵浦光来消除一阶多普勒效应。未受扰动的探测线宽约为13 MHz,在失谐量为11.5 MHz时,探测线宽减小到3 MHz(0.5 Γ)以下。

英文摘要:

We demonstrate two ways of obtaining sub-natural linewidth for probe absorption through room-temperature Rb vapor. Both techniques use a control laser that drives the transition from a different ground state. The coherent drive splits the excited state into two dressed states (Autler-Townes doublet), which have asymmetric linewidths when the control laser is detuned from resonance. In the first technique, the laser has a large detuning of 1.18 GHz to reduce the linewidth to 5.1 MHz from the Doppler width of 560 MHz. In the second technique, we use a counter-propagating pump beam to eliminate the first-order Doppler effect. The unperturbed probe linewidth is about 13 MHz, which is reduced below 3 MHz (0.5 Γ) at a detuning of 11.5 MHz.

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。

↑