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Two-hertz-linewidth Nd:YAG lasers at 1064nm stabilized to vertically mounted ultra-stable cavities

Keywords: narrow linewidth laser,laser frequency stabilization,high finesse cavity,optical clock

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Two Nd:YAG lasers operating at 1064\,nm are separately servo-locked to two vertically mounted ultra-stable cavities. The optical heterodyne beat between two cavity-stabilized lasers shows that the linewidth of each laser reaches 2\,Hz and the average frequency drift reduces to less than 1\,Hz/s.


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