LASER MODULE FOR PROJECTION DISPLAYS
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United States of America Patent
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Issued Date -
Mar 5, 2009
app pub date -
Mar 6, 2008
filing date -
Mar 30, 2007
priority date (Note) -
Abandoned
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Abstract
A laser module with a linear laser diode array includes multiple, mutually separated laser cells. A nonlinear optical material serves to double the frequency of the radiation emitted by the laser cells. The linear laser diode array and the nonlinear optical material are so positioned relative to each other that the resulting frequency-doubled radiation propagates, within the nonlinear optical material and essentially within mutually separated columns associable with the laser cells, both in the direction of the radiation emitted by the laser cells and in the opposite direction. The laser module includes optical elements which divert the bidirectionally propagating frequency-doubled radiation in a manner whereby, upon diversion between the columns in the respective other direction, the radiation propagates in the nonlinear optical material, so that frequency-doubled light ultimately exits the nonlinear optical material in only one direction.
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