激光线宽
激光器
铷
连贯性(哲学赌博策略)
原子钟
光学
激光冷却
分布反馈激光器
材料科学
磁强计
原子物理学
物理
磁场
量子力学
冶金
钾
作者
Yoshio Torii,Hideyasu Tashiro,Nozomi Ohtsubo,T. Aoki
标识
DOI:10.1103/physreva.86.033805
摘要
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.
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