Vertical-cavity surface-emitting laser with an intracavity...

H - Electricity – 01 – S

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H01S 5/026 (2006.01) G02F 3/02 (2006.01) H01S 5/06 (2006.01) H01S 5/065 (2006.01) H01S 5/183 (2006.01)

Patent

CA 2330537

A laser (20) comprises a first contact to receive an active region control signal, a second contact to receive an optical absorber control signal, and a sandwich of distributed Bragg reflector mirror stacks. Each distributed Bragg reflector mirror stack (36, 60) has an alternate doping with respect to an adjacent distributed Bragg reflector mirror stack. An active region (26) is positioned in the sandwich to provide optical gain in response to the active region control signal. An optical absorber (150) is positioned in the sandwich. The optical absorber has wavelength dependent absorption in response to the optical absorber control signal. The device of the invention may be utilized as an integrated detector, a self-pulsating laser, a high speed intracavity modulator, or an optical pick-up device.

Ce laser (20) comprend un premier contact destiné à recevoir un signal de commande d'une région active, un second contact destiné à recevoir un signal de commande de moyens d'absorption optique, et un agencement en sandwich de piles de miroirs réflecteurs Bragg répartis, chaque pile (36, 60) possédant un dopage alterné par rapport à la pile adjacente. Une région active (26) est placée dans l'agencement en sandwich, afin de constituer le gain optique en réponse au signal de commande de la région active. Des moyens d'absorption optique (150) sont placés dans l'agencement en sandwich et possèdent une absorption dépendant de la longueur d'onde en réponse au signal de commande des moyens d'absorption optique. On peut utiliser le dispositif de l'invention en tant que détecteur intégré, laser auto-pulsé, modulateur intracavitaire grande vitesse, ou dispositif de lecture optique.

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