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<p>We propose a simple analytical approach for description of energy transfer from ultra-short laser pulses to quantum oscillator in the thermal equilibrium based on approximate expression for oscillator spectral function. Formulas for the probability of energy transfer in the limits of high and low temperatures are derived and analyzed. The characteristic features of energy transfer to a quantum oscillator from unipolar pulses, wavelets and multi-cycle laser pulses are established.</p>

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Energy transfer from ultra-short laser pulse to quantum oscillator in thermal equilibrium

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年5月24日

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  • V. A. Astapenko,
  • E. V. Sakhno,
  • S. V. Sakhno

摘要

We propose a simple analytical approach for description of energy transfer from ultra-short laser pulses to quantum oscillator in the thermal equilibrium based on approximate expression for oscillator spectral function. Formulas for the probability of energy transfer in the limits of high and low temperatures are derived and analyzed. The characteristic features of energy transfer to a quantum oscillator from unipolar pulses, wavelets and multi-cycle laser pulses are established.