Laser diode element with excellent intermodulation...

H - Electricity – 01 – S

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H01S 5/12 (2006.01) H01S 5/028 (2006.01) H01S 5/062 (2006.01) H01S 5/10 (2006.01) H01S 3/18 (1995.01)

Patent

CA 2113027

In a laser diode element including a front facet, a rear facet, a laser cavity formed between the front the rear facets and which has a predetermined length L, coating layers coated on the front facet to provide a reflectivity smaller than 5 %, and an active layer and a uniform grating having regular corrugation formed in the direction of the laser cavity and which are coupled to each other at a predetermined coupling constant K, the laser diode element is specified by a product of the predetermined coupling constant and the predetermined length L and falling within a range between 0.4 and 1.0, both inclusive.

L'invention est constituée par une diode laser ayant une face avant, une face arrière, une cavité de longueur prédéterminée L formée entre cette face avant et cette face arrière, des couches de recouvrement déposées sur la face avant pour y produire une réflectivité inférieure à 5 %, et une couche active et un réseau uniforme à ondulations formées dans la direction de la cavité et couplées les une aux autres avec une constante de couplage K prédéterminée, cette diode étant caractérisée par le produit de cette constante de couplage prédéterminée et de la longueur prédéterminée L, lequel produit se trouve dans la gamme de valeurs allant de 0,4 inclusivement à 1,0 inclusivement.

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