Laser frequency offset locking by marrying modulation sideband with the two-color polarization spectroscopy in a ladder-type atomic system
Laser frequency offset locking by marrying modulation sideband with the two-color polarization spectroscopy in a ladder-type atomic system
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DOI：
10.1016/j.optcom.2014.01.019
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发表时间：
2014-05
影响因子：
2.4
通讯作者：
Baodong Yang;Jieying Wang;Huifeng Liu;Jun He;Junmin Wang
中科院分区：
文献类型：
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作者：
Baodong Yang;Jieying Wang;Huifeng Liu;Jun He;Junmin Wang
研究了室温蒸汽室中基于铯6S1/2-6P3/2-7S1/2(852 nm+1470 nm)梯形体系的双色偏振光谱(TCPS)。利用TCPS与调频边带相结合的方法，实现了1470 nm激光的偏置锁定。这种锁定方案提供了一种无调制且可方便地调谐激光频率相对于激发态跃迁的锁定点的方法，在双色磁光陷阱、钻石能级结构四波混频实验中具有广泛的应用前景。
We present an investigation of two-color polarization spectroscopy (TCPS) based on cesium 6S1/2–6P3/2–7S1/2(852 nm+1470 nm) ladder-type system in a room-temperature vapor cell. The 1470 nm laser can be offset locked by TCPS combining with frequency modulation sideband. This locking scheme offers a method of modulation-free and conveniently tunable the lock point of laser frequency relative to an excited state transition, and may have many applications such as in two-color magneto-optical trap, diamond-level structure four-wave mixing experiments.