V2EX red detuning

Red Detuning

定义 Definition

red detuning(红失谐/红侧失谐)指在光学与原子物理中,把激光频率调得比某一原子/分子共振频率更低(等价于波长更长、偏“红”)的情况。常用于描述激光与跃迁之间的频率偏差方向;与之相对的是 blue detuning(蓝失谐)。

发音 Pronunciation (IPA)

/rd ditjun/ (也常见 /rd ditun/)

例句 Examples

The experiment uses red detuning to reduce the atoms’ kinetic energy.
实验使用红失谐来降低原子的动能。

With sufficient red detuning and intensity, the optical dipole potential can trap neutral atoms near the focus while minimizing resonant scattering.
在足够的红失谐与光强条件下,光偶极势可以将中性原子束缚在焦点附近,同时尽量减少共振散射。

词源 Etymology

red 来自古英语 rēad,表示“红色”;在物理语境中常用来指“更长波长/更低频率”的方向。detuning 来自动词 detune(使偏离调谐/使离开共振),由 de-(离开、去除)+ une(调谐、调音)构成。合起来,red detuning 就是“向红端(低频端)偏离共振的失谐”。

相关词 Related Words

文学与著作 Literary Works

  • Laser Cooling and Trapping(Metcalf & van der Straten)讨论多种冷却机制中红失谐的作用与条件。
  • Optical Coherence and Quantum Optics(Mandel & Wolf)在原子-光相互作用与谱线理论中使用“detuning/红失谐”等术语。
  • Quantum Optics(Scully & Zubairy)在两能级系统、拉比振荡与失谐分析中频繁出现相关表述。
  • Principles of Lasers(Orazio Svelto)在激光与介质相互作用、频率偏置与线形讨论中涉及失谐概念。
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