Français
5. Real emission lines
5.1 Wave trains and coherence length
The notion of coherence length can be approached in a very pragmatic fashion by considering that, for an ideal transition, the light emitted during a transition consists of a wave train of finite duration τ at a single frequency (figure 1 ). Two wave trains of this type, shifted by a time interval Δ t , can interfere if Δ t < τ ...
The Ultimate Scientific and Technical Reference
This article is included in
Optics and photonics
This offer includes:
Knowledge Base
Updated and enriched with articles validated by our scientific committees
Services
A set of exclusive tools to complement the resources
Practical Path
Operational and didactic, to guarantee the acquisition of transversal skills
Doc & Quiz
Interactive articles with quizzes, for constructive reading
Real emission lines
Role of the optical cavity
