Active element for laser source and laser source including such an active element
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United States of America Patent
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Oct 19, 2010
Grant Date -
Feb 26, 2009
app pub date -
May 27, 2008
filing date -
Jun 12, 2007
priority date (Note) -
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Abstract
An active element for a laser source, the active element comprising an elongated bar with a reflective lateral surface, doped to be able to absorb at least a pumping beam being propagated at least approximately longitudinally in the bar in order to amplify at least a laser radiation also being propagated longitudinally; and a jacket in contact with the lateral surface of the bar and presenting a refractive index smaller than that of the bar, in the reflective lateral surface of the bar, there is at least one dull-ground diffusing zone able to interrupt the paths of spurious laser modes being propagated in the bar by total internal reflections on the lateral surface.
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