Laser with a gain medium layer doped with a rare earth metal with upper and lower light-confining features
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United States of America Patent
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Aug 10, 2021
Grant Date -
Feb 4, 2021
app pub date -
Jul 30, 2019
filing date -
Jul 30, 2019
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Abstract
One illustrative laser disclosed herein includes a gain medium layer having a first width in a transverse direction that is orthogonal to a laser emitting direction of the laser, and an upper light-confining structure positioned above an upper surface of the gain medium layer, wherein the upper light-confining structure has a second width in the transverse direction that is equal to or less than the first width and comprises at least one material having an index of refraction that is at least 2.0. The laser also includes a lower light-confining structure positioned below a lower surface of the gain medium layer, wherein the lower light-confining structure has a third width in the transverse direction that is equal to or less than the first width and comprises at least one material having an index of refraction that is at least 2.0.
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