Single mode vertical cavity surface emitting laser

Details Single mode vertical cavity surface emitting laser Single mode vertical cavity surface emitting laser

H - Electricity

01

S

H01S 5/183 (2006.01) H01S 5/026 (2006.01) H01S 5/042 (2006.01) H01S 5/20 (2006.01)

Patent

CA 2380659

A surface emitting laser with spatially varying optical loss to provide single mode operation. The optical loss may be introduced with an anti-phased ohmic contacts (4, 5). Current injection may be constricted to a diameter that is different than the diameter of the ohmic aperture (32), allowing for optimization of carrier profiles for high-speed performance. Methods for index guiding are introduced to further the reproducibility of the invention.

L'invention concerne un laser émettant par la surface avec une perte optique variant de manière spatiale, afin de constituer un fonctionnement monomode. Cette perte optique peut être introduite au moyen de contacts ohmiques en opposition de phase (4, 5). L'injection de courant peut subir une constriction de son diamètre de façon que celui-ci soit différent du diamètre de l'ouverture ohmique (32), permettant ainsi l'optimisation des profils des porteurs, aux fins d'obtention de performances de vitesse élevée. L'invention concerne également des procédés de guidage d'indice de manière à augmenter encore la reproductibilité de l'invention.

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