Semiconductor devices

Details Semiconductor devices Semiconductor devices

H - Electricity

01

S

356/156, 345/32

H01S 5/22 (2006.01) H01S 3/06 (2006.01) H01S 5/12 (2006.01)

Patent

CA 1228936

ABSTRACT OF THE DISCLOSURE A semiconductor device comprises a base semi- conductor portion and first and second elevated semi- conductor portions thereon separated by a channel. The uppermost surface of the first elevated semicon- ductor portion carries a metal electrical contact layer and the uppermost of the second a dielectric layer. The surfaces defining the channel are sub- stantially free of metal and dielectric. The struc- ture can be used in a ridge waveguide laser, the first elevated semiconductor portion constituting the ridge. Distributed feedback corrugations may be incorporated in such devices or in other ridge waveguide structures.

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