Non-linear femtosecond pulse filter with high contrast
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United States of America Patent
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Sep 30, 2008
Grant Date -
Aug 3, 2006
app pub date -
Nov 30, 2005
filing date -
Nov 30, 2004
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Abstract
The invention relates to a non-linear optical filter capable of transmitting an electromagnetic pulse with a duration of less than about 1 picosecond, provided with means for generating an electromagnetic field E with a linear polarization from this pulse, and with a crystal C1 of cubic geometry capable of generating an electromagnetic field E'.sub.1 from E with a linear polarization orthogonal to that of E. It comprises means for generating at least one other electromagnetic field E'.sub.2 capable of producing constructive interferences with the electromagnetic field E'.sub.1.
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