Coherent light generators – Particular active media – Semiconductor
Reexamination Certificate
2007-11-27
2007-11-27
Harvey, Minsun Oh (Department: 2828)
Coherent light generators
Particular active media
Semiconductor
C372S045010, C372S097000
Reexamination Certificate
active
10865036
ABSTRACT:
A unipolar semiconductor laser is provided in which an active region is sandwiched in a guiding structure between an upper and lower cladding layer, the lower cladding layer being situated on a semiconducting substrate. The unipolar semiconductor laser comprises a raised ridge section running from end to end between end mirrors defining the laser cavity. The ridge section aids in optical and electrical confinement. The ridge waveguide is divided in a plurality of cavity segments (at least two). Lattice structures can be arranged on and/or adjacent to these cavity segments. Each cavity segment is in contact with upper metallic electrodes. A metallic electrode coupled to the bottom surface of the semiconducting substrate facilitates current injection through the device.
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Fischer Marc Oliver
Forchel Alfred
Harvey Minsun Oh
Michaelson Peter L.
Michaelson & Assocaites
Nanoplus GmbH
Nguyen Phillip
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