Improved structure of laser diode

Details Improved structure of laser diode Improved structure of laser diode

H - Electricity

01

S

H01S 5/042 (2006.01) H01S 5/02 (2006.01) H01S 5/20 (2006.01) H01S 5/40 (2006.01)

Patent

CA 2238796

A high power stripe-geometry heterojunction laser diode device is provided which may be employed in a radar system designed to measure the distance to a target. The laser diode device has an electric circuit path extending from a first electrode connected to a voltage source to a second electrode connected to ground and features addition of a resistance of 1 m.OMEGA. or more to the electric circuit path to provide uniform current distribution in an active layer for emitting a high density laser beam.

L'invention est un dispositif à diode laser à hétérojonction en ruban de grande puissance qui peut être utilisé dans un système radar conçu pour mesurer la distance d'une cible. Le dispositif de l'invention comporte un trajet de circuit électrique qui relie une première électrode connectée à une source de tension, à une seconde électrode connectée à la terre; il comporte également une résistance de 1 m ou plus qui est montée dans ce trajet pour uniformiser la distribution du courant dans la couche active afin de produire un faisceau laser de grande intensité.

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