Diao Wenting, He Jun, Liu Zhi, Yang Baodong, Wang Junmin
State Key Laboratory of Quantum Optics and Quantum Optics Devices, and Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, Shanxi Province, China.
Opt Express. 2012 Mar 26;20(7):7480-7. doi: 10.1364/OE.20.007480.
By optical injection of an 852-nm extended-cavity diode laser (master laser) to lock the + 1-order sideband of a ~9-GHz-current-modulated diode laser (slave laser), we generate a pair of phase-locked lasers with a frequency difference up to ~9-GHz for a cesium (Cs) magneto-optical trap (MOT) with convenient tuning capability. For a cesium MOT, the master laser acts as repumping laser, locked to the Cs 6S₁/₂ (F = 3) - 6P₃/₂ (F' = 4) transition. When the + 1-order sideband of the 8.9536-GHz-current-modulated slave laser is optically injection-locked, the carrier operates on the Cs 6S₁/₂ (F = 4) - 6P₃/₂ (F' = 5) cooling cycle transition with -12 MHz detuning and acts as cooling/trapping laser. When carrying a 9.1926-GHz modulation signal, this phase-locked laser system can be applied in the fields of coherent population trapping and coherent manipulation of Cs atomic ground states.
通过光学注入一台852纳米的外腔二极管激光器（主激光器）来锁定一台约9吉赫兹电流调制二极管激光器（从激光器）的 +1阶边带，我们生成了一对锁相激光器，其频率差高达约9吉赫兹，适用于具有便捷调谐能力的铯（Cs）磁光阱（MOT）。对于铯磁光阱，主激光器用作再泵浦激光器，锁定在铯6S₁/₂（F = 3） - 6P₃/₂（F' = 4）跃迁上。当8.9536吉赫兹电流调制从激光器的 +1阶边带被光学注入锁定时，载波在铯6S₁/₂（F = 4） - 6P₃/₂（F' = 5）冷却循环跃迁上运行，失谐为 -12兆赫兹，并用作冷却/俘获激光器。当携带9.1926吉赫兹调制信号时，这个锁相激光系统可应用于铯原子基态的相干布居俘获和相干操控领域。
