Simultaneous two-photon resonant optical laser locking (STROLLing) in the hyperfine Paschen-Back regime.
Simultaneous two-photon resonant optical laser locking (STROLLing) in the hyperfine Paschen-Back regime.
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DOI：
10.1364/ol.43.004204
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发表时间：
2018-07
期刊：
影响因子：
3.6
通讯作者：
Renju S Mathew;F. Ponciano-Ojeda;J. Keaveney;D. Whiting;I. Hughes
中科院分区：
文献类型：
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作者：
Renju S Mathew;F. Ponciano-Ojeda;J. Keaveney;D. Whiting;I. Hughes
我们展示了一种技术，同时锁定两个激光频率的双光子跃迁的每一步中存在的磁场足够大，以获得超精细Paschen-Back制度。使用具有Rb 87原子的热蒸气中的5S 1/2、5 P 3/2和5D 5/2项的梯形配置。两个激光器保持锁定超过24小时。对于激光频率的总和，这代表了双光子锁的稳定性，我们测量的频率不稳定性小于Rb D2的自然线宽为6 MHz的几乎所有测量的时间尺度。
We demonstrate a technique to lock simultaneously two laser frequencies to each step of a two-photon transition in the presence of a magnetic field sufficiently large to gain access to the hyperfine Paschen-Back regime. A ladder configuration with the 5S1/2, 5P3/2, and 5D5/2 terms in a thermal vapor of Rb87 atoms is used. The two lasers remain locked for more than 24 h. For the sum of the laser frequencies, which represents the stability of the two-photon lock, we measure a frequency instability of less than the Rb D2 natural linewidth of 6 MHz for nearly all measured timescales.