Circular grating surface emitting laser diode
OwnerO'Dae Kwoninventor
Life of this patent
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Abstract
A surface emitting laser diode comprises a circular grating defined on the top surface of the diode for emitting a laser therethrough, an active layer for generating the laser in the region thereof under the circular grating, a reflection layer for preventing the laser from emitting through the bottom surface of the diode and a first contact, which includes a plurality of electrodes, for providing the active layer with carriers of a first conduction type and a second contact for providing the active layer with carriers of a second conduction type.
Claims4
A surface emitting laser diode having a top and a bottom surfaces comprising:
- a non-equally-spaced eccentric circular grating defined on a portion of the top surface for emitting a laser therethrough;
- an active layer for generating the laser in a region thereof under the non-equally-spaced eccentric circular grating;
- a reflection layer for preventing the laser from emitting through the bottom surface of the laser diode, the reflection layer being positioned intermediate the bottom surface and the active layer;
- a first contact for providing the active layer with carriers of a first conduction type, the first contact having a plurality of electrodes, each of which is controlled independently and disposed outside the non-equally-spaced eccentric circular grating on the top surface;
- and
- a second contact for providing carriers of a second conduction type to the active layer.
A surface emitting laser diode having a top and a bottom surfaces comprising:
- a non-equally-spaced eccentric elliptical grating defined on a portion of the top surface for emitting a laser therethrough;
- an active layer for generating the laser in a region thereof under the non-equally-spaced eccentric elliptical grating;
- a reflection layer for preventing the laser from emitting through the bottom surface of the laser diode, the reflection layer being positioned intermediate the bottom surface and the active layer;
- a first contact for providing the active layer with carriers of a first conduction type, the first contact having a plurality of electrodes, each of which is controlled independently and disposed outside the non-equally-spaced eccentric elliptical grating on the top surface;
- and
- a second contact for providing carriers of a second conduction type to the active layer.
Dependencies are inferred from the claim text.