V2EX mode-locking

Mode-Locking

Definition / 释义

(激光物理)锁模:一种让激光谐振腔内多个纵模保持固定相位关系的技术,从而产生超短脉冲(常见为皮秒/飞秒级),并提高峰值功率与时间相干性。该词在不同领域也可泛指“把系统锁定在某种工作模式”,但最常见用法指激光锁模。

Pronunciation / 发音

/mod lk/

Examples / 例句

The lab built a mode-locking laser to generate ultrashort pulses.
实验室搭建了一台锁模激光器来产生超短脉冲。

By mode-locking the cavity, the system forces many longitudinal modes to oscillate with a fixed phase relationship, producing a stable pulse train.
通过对谐振腔进行锁模,系统迫使许多纵模以固定的相位关系振荡,从而产生稳定的脉冲序列。

Etymology / 词源

mode(模态;模式) + locking(锁定) 组成。这里的 mode 指激光腔内允许的振荡“模”(尤其是纵模),locking 指把这些模的相位“锁住”,使它们协同叠加形成短脉冲;该术语随现代激光与超快光学的发展而普及。

Related Words / 相关词

Literary Works / 文学作品

  • Lasers Anthony E. Siegman
  • Principles of Lasers Orazio Svelto
  • Ultrashort Laser Pulse Phenomena Jean-Claude Diels & Wolfgang Rudolph
  • Nonlinear Optics Robert W. Boyd
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