Coherent light generators – Particular active media – Semiconductor
Reexamination Certificate
2005-08-16
2005-08-16
Harvey, Minsun Oh (Department: 2828)
Coherent light generators
Particular active media
Semiconductor
C372S046012, C438S046000, C438S047000
Reexamination Certificate
active
06931043
ABSTRACT:
A semiconductor laser diode and method are described, wherein the path of the current through the device between the positive and negative conductors is controlled. Lateral spread of the gain current in the active region is prevented by implanting protons in areas of the active layer flanking a desired gain region. The implanted regions become less conductive, and prevent lateral spread of the gain current. The position of the implanted regions can be selected so that the gain current only crosses a portion of the active layer that supports desired lateral modes of the laser light.
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Connolly John C.
Dimarco Louis A.
Menefee James
Trumpf Photonics Inc.
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