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- W4224299985 abstract "In many scientific fields, the continuous operation of ultra-stable lasers is crucial for applications. To speed up the frequency stabilization process in case of the occurence of unexpected interruptions, a prompt frequency stabilization approach based on an improved mean shift algorithm is proposed and verified with a homemade laser system. We developed a double-loop feedback controller to steer the laser frequency with fast and slow channels, respectively. In this study, an improved mean shift algorithm is utilized to intelligently search for the transmission signal, which involves adaptively updating the sliding window radius and incorporating a Gaussian kernel function to update the shift vector. The number of lock points on the left and right sides of the central point determines the scanning direction to search for the transmission signal quickly. The laser is intentionally interrupted 306 times within 10,000 s to evaluate the relocking performance. The median auto-locking time of the laser is improved from 16 s to 4 s. By beating with another ultra-stable laser system, the laser frequency instability is measured to be less than 2.1×10−14 and the linewidth is 5 Hz. This work improves the adaptation and relocking ability of the ultra-stable laser in a complex environment." @default.
- W4224299985 created "2022-04-26" @default.
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- W4224299985 date "2022-04-21" @default.
- W4224299985 modified "2023-10-11" @default.
- W4224299985 title "Prompt Frequency Stabilization of Ultra-Stable Laser via Improved Mean Shift Algorithm" @default.
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- W4224299985 doi "https://doi.org/10.3390/electronics11091319" @default.
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