Coherent light generators – Particular active media – Semiconductor
Reexamination Certificate
2011-08-30
2011-08-30
Stultz, Jessica T (Department: 2828)
Coherent light generators
Particular active media
Semiconductor
Reexamination Certificate
active
08009714
ABSTRACT:
A laser diode includes a substrate having a lattice constant of GaAs or between GaAs and GaP, a first cladding layer of AlGaInP formed on the substrate, an active layer of GaInAsP formed on the first cladding layer, an etching stopper layer of GaInP formed on the active layer, a pair of current-blocking regions of AlGaInP formed on the etching stopper layer so as to define a strip region therebetween, an optical waveguide layer of AlGaInP formed on the pair of current-blocking regions so as to cover the etching stopper layer in the stripe region, and a second cladding layer of AlGaInP formed on the optical waveguide layer, wherein the current-blocking regions having an Al content substantially identical with an Al content of the second cladding layer.
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Jikutani Naoto
Sato Shun'ichi
Takahashi Takashi
Dickstein & Shapiro LLP
Nguyen Tuan N
Ricoh & Company, Ltd.
Stultz Jessica T
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