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Method for checking the control condition of a frequency-stabilized lasers arrangement and a frequency-stabilized laser arrangement
Method for checking the control condition of a frequency-stabilized lasers arrangement and a frequency-stabilized laser arrangement
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机译：检查频率稳定的激光器装置和频率稳定的激光器装置的控制条件的方法
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摘要
The invention relates to a method for checking the regulation state of a frequency-stabilised laser system comprising a laser (2). At least one first sideband frequency VHF is modulated to the laser beam (1) of said laser, the laser beam being guided through an absorption material (13) comprising a plurality of absorption lines in a detuning region of the laser (2), said absorption lines being arranged at different distances from each other. The laser frequency VL is detuned and, as a regulation signal for the laser frequency VL, it is determined whether there has been an absorption in the absorption material. The inventive method is characterised in that a second sideband frequency VFG is modulated to the laser beam (1), said frequency being at a known distance defined by a frequency generator (29) in relation to the laser frequency VO; in that the absorption of the second sideband frequency VO + VFG in the absorption material is checked at least from time to time; and in that when no absorption is observed for the second sideband frequency, the laser frequency VL is detuned until an absorption of both the laser frequency VO and the second sideband frequency VO + VFG is observed.
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