Beam-shaping optical element and device for converting a beam having a first cross-section into a beam having a second cross-section
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United States of America Patent
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Nov 14, 1995
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N/A
app pub date -
Dec 29, 1993
filing date -
Jan 4, 1993
priority date (Note) -
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Abstract
A beam-shaping element for converting a beam having an elliptical cross-section into a beam having a circular cross-section. This element has a cylindrical entrance surface and a toriodal exit surface and can be arranged close to a diode laser so that the risk of wavefront deviations due to defocusing is reduced. The element has a high coupling efficiency.
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