Method and apparatus for generation and amplification of light in a semi-guiding high aspect ratio core fiber
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United States of America Patent
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Oct 22, 2013
Grant Date -
Nov 1, 2012
app pub date -
Jun 27, 2012
filing date -
Aug 9, 2007
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Abstract
A planar laser gain medium and laser system. The novel laser gain medium includes an active core having a high aspect ratio cross-section with a fast-axis dimension and a slow-axis dimension, signal claddings adapted to form reflective boundaries at fast-axis boundaries of the core, and a material adapted to minimize reflections at slow-axis boundaries of the core. In an illustrative embodiment, the laser gain medium is an optical fiber. The core and claddings form a waveguide adapted to control modes propagating in the fast-axis direction. When the laser gain medium is employed as a laser oscillator, a high reflectivity mirror and an outcoupler are positioned at opposite ends of the core to form a laser resonator adapted to control modes in the slow-axis direction.
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