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arXiv · 2608.08983

Optimization of the Repumping Parameters for a Sodium Laser Guide Star Magnetometer

Yucheng Yang·Chunyang Lei·Kai Guo·Shuai Wang
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Abstract

A sodium laser guide star operated as a mesospheric magnetometer modulates a 589 nm laser at the local Larmor frequency and usually diverts a fraction of its power to a repumping light that recovers atoms lost to the dark ground state.The polarization, read out for the most strongly driven velocity group, calls for 2.8 times the flux optimal fraction, and a shot noise figure of merit combining the two observables for 2 times, beyond the range commercial guide star lasers provide.

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Yucheng Yang, Chunyang Lei, Kai Guo, Shuai Wang. 2026-08-10. Optimization of the Repumping Parameters for a Sodium Laser Guide Star Magnetometer. https://arxiv.org/abs/2608.08983

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