Optical beam power controller using a tiltable birefringent plate
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United States of America Patent
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Jun 19, 2001
Grant Date -
N/A
app pub date -
Jul 23, 1999
filing date -
Apr 15, 1999
priority date (Note) -
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Abstract
The present invention is an inexpensive optical beam power controller for providing fast, continuous control of a linearly polarized optical beam, such as a beam from a laser. In essence, the controller comprises a birefringent plate tiltable in relation to the beam and a polarization analyzer. Alternative double pass embodiments reduce beam displacement and the required tilt angle.
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