Polarization beam splitter
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United States of America Patent
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May 7, 2002
Grant Date -
N/A
app pub date -
Jan 11, 2001
filing date -
May 11, 1999
priority date (Note) -
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Abstract
A polarization splitter which includes a splitting medium lying between two transparent elements of defined indices. The splitting medium includes a periodic structure of layers of materials of different indices and having a period which is small compared with the wavelength of an incident beam so as to form a uniaxial birefringent medium of optical axis perpendicular to the plane of the periodic structure. The two transparent elements are made of a material of index approximately equal to the ordinary index (n.sub.o) of the periodic structure.
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