Liang Qiangbing, Yang Baodong, Zhang Tiancai, Wang Junmin
State Key Laboratory of Quantum Optics and Quantum Optics Devices, and Institute of Opto-Electronics, Shanxi University, Taiyuan, P.R. China.
Opt Express. 2010 Jun 21;18(13):13554-62. doi: 10.1364/OE.18.013554.
By monitoring the transmission of probe laser beam (also served as coupling laser beam) which is locked to a cycling hyperfine transition of cesium D(2) line, while pumping laser is scanned across cesium D(1) or D(2) lines, the single-resonance optical pumping (SROP) spectra are obtained with atomic vapor cell. The SROP spectra indicate the variation of the zero-velocity atoms population of one hyperfine fold of ground state, which is optically pumped into another hyperfine fold of ground state by pumping laser. With the virtue of Doppler-free linewidth, high signal-to-noise ratio (SNR), flat background and elimination of crossover resonance lines (CRLs), the SROP spectra with atomic vapor cell around room temperature can be employed to measure dressed-state splitting of ground state, which is normally detected with laser-cooled atomic sample only, even if the dressed-state splitting is much smaller than the Doppler-broaden linewidth at room temperature.
通过监测锁定在铯D(2)线的循环超精细跃迁上的探测激光束（也用作耦合激光束）的传输，同时泵浦激光扫过铯D(1)或D(2)线，利用原子蒸气室获得单共振光泵浦（SROP）光谱。SROP光谱表明基态一个超精细能级的零速度原子数的变化，该能级被泵浦激光光泵浦到基态的另一个超精细能级。凭借无多普勒线宽、高信噪比（SNR）、平坦背景以及消除交叉共振线（CRL），即使在室温下缀饰态分裂远小于多普勒展宽线宽，室温附近的原子蒸气室的SROP光谱也可用于测量基态的缀饰态分裂，而通常只有激光冷却的原子样品才能检测到这种分裂。
