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Abstract <p>A laser guide star (LGS) is an essential part of the adaptive optics system of a ground-based optical telescope. The main limitation of sodium LGSs, formed on the basis of the resonant fluorescence of mesospheric sodium atoms is low brightness. To estimate a possibility of creating LGS based on the fluorescence of other metals in the mesosphere, the efficiencies of fluorescence excitation schemes for atoms of potassium and nickel are calculated. The relative inverse fluorescence flux for transitions of potassium and nickel atoms is calculated taking into account the content of the atoms in the mesosphere and the transmittance of the atmosphere. The comparison with the results for sodium atoms is made. Our results can be used for the development of adaptive optics systems with artificial reference sources for ground-based telescopes and mesospheric lidars.</p>

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Efficiency of Resonance and Cascade Schemes of Fluorescence Excitation in Atoms in Mesosphere for Laser Guide Star Creation. Part I. Potassium and Nickel Atoms

  • 期刊论文

  • 发表日期：

    2025年6月1日

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  • S. M. Bobrovnikov,
  • L. A. Bolbasova,
  • E. V. Gorlov,
  • V. I. Zharkov,
  • V. P. Lukin

摘要

Abstract

A laser guide star (LGS) is an essential part of the adaptive optics system of a ground-based optical telescope. The main limitation of sodium LGSs, formed on the basis of the resonant fluorescence of mesospheric sodium atoms is low brightness. To estimate a possibility of creating LGS based on the fluorescence of other metals in the mesosphere, the efficiencies of fluorescence excitation schemes for atoms of potassium and nickel are calculated. The relative inverse fluorescence flux for transitions of potassium and nickel atoms is calculated taking into account the content of the atoms in the mesosphere and the transmittance of the atmosphere. The comparison with the results for sodium atoms is made. Our results can be used for the development of adaptive optics systems with artificial reference sources for ground-based telescopes and mesospheric lidars.