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Laser diode with thermal conducting, current confining filmA laser diode formed of a rectangular parallelopiped body of single crystalline semiconductor material includes regions of opposite conductivity type indium phosphide extending to opposite surfaces of the body. Within the body is a PN junction at which light can be generated. A stripe of a conductive material is on the surface of the body to which the P type region extends and forms an ohmic contact with the P type region. The stripe is spaced from the side surfaces of the body and extends to the end surfaces of the body. A film of germanium is on the portions of the surface of the P type region which is not covered by the conductive stripe. The germanium film serves to conduct heat from the body and forms a blocking junction with the P type region so as to confine the current through the body, across the light generating PN junction, away from the side surfaces of the body.
Document ID
20080006909
Acquisition Source
Headquarters
Document Type
Other - Patent
Authors
Hawrylo, Frank Z.
Date Acquired
August 24, 2013
Publication Date
January 8, 1980
Subject Category
Lasers And Masers
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
US-PATENT-4,182,995
Patent Application
US-PATENT-APPL-SN-887365

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