Laser-phase and frequency stabilization using atomic coherence
Laser-phase and frequency stabilization using atomic coherence
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DOI：
10.1103/physreva.86.033805
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发表时间：
2012-01
影响因子：
2.9
通讯作者：
Y. Torii;H. Tashiro;N. Ohtsubo;T. Aoki
中科院分区：
文献类型：
--
作者：
Y. Torii;H. Tashiro;N. Ohtsubo;T. Aoki
我们提出了一种通过原子蒸气偏振光谱稳定激光相位和频率的新颖而简单的方法。与使用空腔作为激光相位存储器的庞德-德雷弗-霍尔方法类似，该方法使用原子相干性（偶极子振荡）作为发射激光场的相位存储器。使用分布式反馈激光二极管和铷蒸气室的初步实验证明了散粒噪声限制的激光线宽减小（从 2 MHz 到 20 kHz）。这种方法将提高基于气室的光学原子钟和磁力计的性能，并促进使用窄跃迁的激光冷却实验。
We present a novel and simple method of stabilizing the laser phase and frequency by polarization spectroscopy of an atomic vapor. In analogy to the Pound-Drever-Hall method, which uses a cavity as a memory of the laser phase, this method uses atomic coherence (dipole oscillations) as a phase memory of the transmitting laser field. A preliminary experiment using a distributed feedback laser diode and a rubidium vapor cell demonstrates a shot-noise-limited laser linewidth reduction (from 2 MHz to 20 kHz). This method would improve the performance of gas-cell-based optical atomic clocks and magnetometers and facilitate laser-cooling experiments using narrow transitions.