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EP0084003A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Device for stabilizing the optical power of a semiconductor laser

Assignee: Thales SA
•
Filing: 1983-01-04
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Granted: —
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Expires: 2003-01-04
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Abstract

Abstract Translated from French La puissance optique utile d'un laser (C) semiconducteur sort par sa face avant (f1). La puissance de contrôle sort de la face arrière (f2) et entre dans un guide optique (G), formé par l'assemblage de deux pièces (22, 23). La lumière guidée tombe sur le photodétecteur de contrôle (5). Le courant détecté commande la puissance électrique de commande (4) du laser (C). Application à la stabilisation d'un laser de lecture d'un disque optique. The useful optical power of a semiconductor laser (C) exits through its front face (f1). The control power leaves the rear face (f2) and enters an optical guide (G), formed by the assembly of two parts (22, 23). The guided light falls on the control photodetector (5). The detected current controls the electrical control power (4) of the laser (C). Application to the stabilization of a laser for reading an optical disc.

Inventors

  • 👤 Eugène Duda
  • 👤 Roger De Decker
  • 👤 Claude Tondu

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-06 09:29
CPC Classifications
H; H01; H01S; H01S5/00; H01S5/005; H01S5/02; H01S5/022; H01S5/023; H01S5/02325; H01S5/06; H01S5/068; H01S5/0683

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