TERMIUM Plus®

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THREE LEVEL LASER [1 record]

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Record 1 2024-02-29

English

Subject field(s)
  • Lasers and Masers
DEF

... a laser system involving three energy levels, one of which is the ground state.

CONT

In a three-level laser, the material is first excited to a short-lived high-energy state that spontaneously drops to a somewhat lower-energy state with an unusually long lifetime, called a metastable state.

Key term(s)
  • three level laser

French

Domaine(s)
  • Masers et lasers
CONT

[...] nous constatons que pour un laser à trois niveaux, le niveau bas de la transition laser est le niveau fondamental. Ce niveau étant en permanence fortement peuplé, l'inversion de population est difficile à réaliser et l'onde laser subit de fortes pertes par réabsorption.

Spanish

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