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Doppler-free spectroscopy of rubidium atoms driven by a control laser |
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| Authors: | Zheng Tan Xiu-chao Zhao Yong Cheng Xian-ping Sun Jun Luo Xin Zhou Jin Wang Ming-sheng Zhan |
| Institution: | 1. State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences; Wuhan National Laboratory for Optoelectronics, Wuhan, 430071, China 2. Center for Cold Atom Physics, Chinese Academy of Sciences, Wuhan, 430071, China 3. Chinese Academy of Sciences, Graduate University, Beijing, 100049, China |
| Abstract: | A scheme of Doppler-free spectroscopy is experimentally demonstrated with a co-propagating control laser locking to an atomic hyperfine transition, and the differential transmission of the probe and the reference laser is detected. Crossover resonances are eliminated by selecting the class of atoms with zero velocity in the direction of beam propagation. In addition, the sub-Doppler spectrum experiences optical gain compared to the conventional saturated-absorption spectrum as a result of optical pumping. |
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