Stable Narrow Linewidth 689nm Diode Laser for the Second Stage Cooling and Trapping of Strontium Atoms |
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| Authors: | LI Ye LIN Yi-Ge ZHAO Yang WANG Qiang WANG Shao-Kai YANG Tao CAO Jian-Ping LI Tian-Chu FANG Zhan-Jun ZANG Er-Jun |
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| Affiliation: | Division of Electricity and Quantum Metrology, National Institute of Metrology, Beijing 100013 Department of Precision Instruments and Mechanology, Tsinghua University, Beijing 100084 Department of optical Engineering, Beijing Institute of Technology, Beijing 100081 |
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| Abstract: | We report stable narrow linewidth laser systems based on self-developed Littman configuration external cavity diode lasers (ECDLs). The frequency of the ECDL is stabilized to a high fineness ultralow-expansion glass reference cavity with the Pound-Drever-Hall technique. By heterodyne beating of two identical systems, we conclude that the linewidth of each ECDL is reduced to lower than 150 Hz and its frequency stability reaches 4.3× 10-14 at an averaging time of 1 s, the averaged long-term frequency drift is less than 0.2 Hz/s over 30 h measurement time. |
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| Keywords: | 42 79 Gn 42 55 Px 42 60 Pk 37 10 Jk 06 20 fb |
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