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<p>In this paper, the influence of the laser stimulated radiation rate on the distribution of the laser intensity noise spectrum is investigated through the analysis of single-frequency lasers with output laser powers ranging from 2 to 140 W and laser stimulated radiation rates varying in order of magnitudes from <InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="41598_2025_88699_Article_IEq1.gif" Format="GIF" Height="16" Rendition="HTML" Resolution="72" Type="Linedraw" Width="29" /> </InlineMediaObject> <EquationSource Format="TEX">\(10^{10}\)</EquationSource> </InlineEquation> to <InlineEquation ID="IEq2"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="41598_2025_88699_Article_IEq2.gif" Format="GIF" Height="16" Rendition="HTML" Resolution="72" Type="Linedraw" Width="29" /> </InlineMediaObject> <EquationSource Format="TEX">\(10^{11}\)</EquationSource> </InlineEquation> <InlineEquation ID="IEq3"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="41598_2025_88699_Article_IEq3.gif" Format="GIF" Height="16" Rendition="HTML" Resolution="72" Type="Linedraw" Width="25" /> </InlineMediaObject> <EquationSource Format="TEX">\(s^{-1}\)</EquationSource> </InlineEquation>. It is found that the magnitude of the stimulated radiation rate can determine the shot noise limit cut-off frequency of the laser, and the specific value of the laser stimulated radiation rate together with the pumping rate and the total photon decay rates, can determine the resonant relation oscillation frequency of the laser. Based on these findings, methods for achieving low intensity noise lasers by obtaining a smaller laser stimulated radiation rate are analyzed and discussed, and a potential approach for realizing low intensity noise high power lasers is proposed.</p>

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Revealing the role of laser stimulated radiation rate on laser intensity noise spectrum distribution

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年3月3日

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  • Yongrui Guo,
  • Xuesen Xu,
  • Xu Zhou,
  • Nana Zhang

摘要

In this paper, the influence of the laser stimulated radiation rate on the distribution of the laser intensity noise spectrum is investigated through the analysis of single-frequency lasers with output laser powers ranging from 2 to 140 W and laser stimulated radiation rates varying in order of magnitudes from \(10^{10}\) to \(10^{11}\) \(s^{-1}\) . It is found that the magnitude of the stimulated radiation rate can determine the shot noise limit cut-off frequency of the laser, and the specific value of the laser stimulated radiation rate together with the pumping rate and the total photon decay rates, can determine the resonant relation oscillation frequency of the laser. Based on these findings, methods for achieving low intensity noise lasers by obtaining a smaller laser stimulated radiation rate are analyzed and discussed, and a potential approach for realizing low intensity noise high power lasers is proposed.