Emisión espontánea y emisión estimulada
ISSN: 2171-8814
Year of publication: 2015
Issue Title: International Year of Light
Volume: 48
Issue: 2
Pages: 109-113
Type: Article
More publications in: Óptica pura y aplicada
Abstract
When we talk about the laser, we talk about light emitted in a stimulated way which is the light directly visible. However, processes of spontaneous emission occur at the same time. Light emitted spontaneously can be easily observed by removing the casing of a Helium Neon laser. The simultaneous occurrence of processes of spontaneous and stimulated emission is an unshakeable law of nature, even if processes of the second type predominate in the laser. A simple experience allows us to carry out a rough calculation of the ratio between the two types of processes.