arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1905.09484physics.atom-ph
收藏

双光子激发Rb蒸气里德堡态产生准直UV光

Collimated UV light generation by two-photon excitation to a Rydberg state in Rb vapor

Mark Lam, Sambit B. Pal, Thibault Vogt, Christian Gross, Martin Kiffner, Wenhui Li

摘要:

我们使用780 nm和515 nm的两束连续波(CW)激光在加热的蒸气室中光学驱动$^{85}$ Rb原子到低里德堡态10 D $_{5/2}$。我们在311 nm处观察到一束准直的紫外光,对应于从11 P $_{3/2}$态到5 S $_{1/2}$态的跃迁频率。这表明存在相干四波混频过程,该过程由两个输入激光场以及由10 D $_{5/2}$和11 P $_{3/2}$状态之间的放大自发发射产生的3.28 THz的太赫兹(THz)辐射建立。我们表征了311 nm紫外光的产生及其对各种物理参数的依赖性。该方案可以为产生窄带THz波以及深紫外辐射开辟新的可能性。

英文摘要:

We use two continuous-wave (CW) laser beams of 780 nm and 515 nm to optically drive $^{85}$Rb atoms in a heated vapor cell to a low-lying Rydberg state 10D$_{5/2}$. We observe a collimated ultraviolet (UV) beam at 311 nm, corresponding to the transition frequency from the 11P$_{3/2}$ state to the 5S$_{1/2}$ state. This indicates the presence of a coherent four-wave mixing process, built up by two input laser fields as well as a terahertz (THz) radiation of 3.28 THz that is generated by amplified spontaneous emission between the 10D$_{5/2}$ and the 11P$_{3/2}$ states. We characterize the 311 nm UV light generation and its dependence on various physical parameters. This scheme could open up a new possibility for generating narrow-band THz waves as well as deep UV radiation.

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。

↑