Light emitting device

Details Light emitting device Light emitting device

H - Electricity

01

L

345/32, 345/50

H01L 33/00 (2006.01)

Patent

CA 1175538

RCA 75, 842 IMPROVED LIGHT EMITTING DEVICE ABSTRACT OF THE DISCLOSURE A light emitting device comprises a substrate, a first confining layer overlying the substrate, an active layer overlying the first confining layer, a second confining layer overlying the active layer and a capping layer overlying the second confining layer. The improvement is the interposition of an absorber layer which absorbs light at the wavelength of the emission between the substrate and the first confining layer and a capping layer which absorbs light at the wavelength of the emission. The improved device exhibits an output beam which has a narrow angular intensity pattern in the plane perpendicular to the plane of the layers and to the end surfaces of the device.

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