Index guided laser structure
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United States of America Patent
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Issued Date -
Nov 27, 2003
app pub date -
Feb 19, 2003
filing date -
May 21, 2002
priority date (Note) -
Abandoned
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Abstract
An index guide laser structure of the invention utilizes the combination of two spatial filter elements to limit or eliminate oscillation of high order lateral modes and beam steering. A preferred structure utilizes a frustrated and curved index guide to induce bend loss in higher order modes, and another preferred structure utilizes frustrating guides to introduce periodic interruptions of the refractive index outside the central guide to induce scattering loss in the higher order modes.
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