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<p>We consider damped driven Maxwell–Bloch equations for a single-mode Maxwell field coupled to a two-level molecule. The equations are used for semiclassical description of the laser action. Our main result is the construction of solutions with single-frequency asymptotics of the Maxwell field in the case of quasiperiodic pumping. The asymptotics hold for solutions with harmonic initial values which are stationary states of averaged reduced equations in the interaction picture. We calculate all harmonic states and analyse their stability. Our calculations rely on the Hopf reduction by the gauge symmetry group <i>U</i>(1). The asymptotics follow by application of the averaging theory of Bogolyubov–Eckhaus–Sanchez-Palencia.</p>

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On Single-Frequency Asymptotics for the Maxwell–Bloch Equations: Pure States

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年2月5日

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  • A. I. Komech,
  • E. A. Kopylova

摘要

We consider damped driven Maxwell–Bloch equations for a single-mode Maxwell field coupled to a two-level molecule. The equations are used for semiclassical description of the laser action. Our main result is the construction of solutions with single-frequency asymptotics of the Maxwell field in the case of quasiperiodic pumping. The asymptotics hold for solutions with harmonic initial values which are stationary states of averaged reduced equations in the interaction picture. We calculate all harmonic states and analyse their stability. Our calculations rely on the Hopf reduction by the gauge symmetry group U(1). The asymptotics follow by application of the averaging theory of Bogolyubov–Eckhaus–Sanchez-Palencia.