Quantum cascade laser

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11476642
APP PUB NO 20210305785A1
SERIAL NO

17173993

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A quantum cascade laser includes a first and a second mesa waveguides disposed on a substrate, a first electrode, a second electrode, and a current blocking region disposed burying the first and second mesa waveguides. The first and second mesa waveguides extend in a first direction. The first and second mesa waveguides are arranged apart from each other by a distance in a second direction intersecting with the first direction. The current blocking region has a first portion disposed between the first and second mesa waveguides and a second portion disposed on the first portion. The end of the first electrode and the end of the second electrode are facing each other in the second direction. The second portion protrudes from a reference plane which includes a surface of the end of the first electrode and extends in the first and second directions.

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Patent Owner(s)

  • SUMITOMO ELECTRIC INDUSTRIES LTD.

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hashimoto, Jun-Ichi Osaka, JP 75 279

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