Surface emitting semiconductor laser
First Claim
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1. A surface emitting laser comprising:
- an active layer in a mesa configuration, buried in an electrical current injection layer made of a p-doped III-V semiconductor alloy, said active layer being bounded on three sides by said electrical current layer,at least one mirror parallel to said active layer on said injection layer,an electrode alongside said mirror and in electrical contact with said injection layer, anda current blocking layer in said injection layer in a plane substantially parallel to said active layer, said blocking layer having an opening centered relative to said active layer and having smaller dimensions than said active layer.
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Abstract
To improve the efficiency and to reduce the temperature rise of a surface emitting semiconductor laser, the laser includes between a buried active layer and a mirror, a current blocking layer incorporating an opening centered on the active layer and having dimensions less than those of the latter. Applications include optical telecommunication systems.
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Citations
6 Claims
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1. A surface emitting laser comprising:
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an active layer in a mesa configuration, buried in an electrical current injection layer made of a p-doped III-V semiconductor alloy, said active layer being bounded on three sides by said electrical current layer, at least one mirror parallel to said active layer on said injection layer, an electrode alongside said mirror and in electrical contact with said injection layer, and a current blocking layer in said injection layer in a plane substantially parallel to said active layer, said blocking layer having an opening centered relative to said active layer and having smaller dimensions than said active layer. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification