Interband cascade lasers with low-fill-factor top contact for reduced loss

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United States of America Patent

PATENT NO 9923338
SERIAL NO

15172338

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Abstract

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A DFB laser having a reduced fill factor and reduced loss. A plurality of spaced-apart contact openings are etched into a dielectric layer situated on top of a laser ridge having a DFB grating layer so that electrical contact between the metal top contact layer and the DFB gratings is made only in the etched openings, since all other areas of the top surface of the DFB-grated laser ridge are insulated from the metal contact layer by the dielectric. The size and shape of contact openings and their spacing are configured so that the ratio of the total area of the openings to the total area of the laser ridge provides a fill factor of less than 100%.

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Patent Owner(s)

  • THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bewley, William W Falls Church, US 34 241
Canedy, Chadwick Lawrence Washington, US 27 151
Kim, Chul Soo Springfield, US 103 696
Kim, Mijin Springfield, US 49 240
Merritt, Charles D Fairfax, US 27 154
Meyer, Jerry R Catonsville, US 54 529
Vurgaftman, Igor Severna Park, US 52 413

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