Laser beam multimeter
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United States of America Patent
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Jan 13, 2004
Grant Date -
Nov 6, 2003
app pub date -
May 1, 2002
filing date -
May 1, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The objective of the present invention is providing a method and a simple instrument that can be used on a routine basis to accurately and quickly measure the focus position, waist radius, divergence, quality, power and power density of a laser beam. The measurement is performed by scanning a thin film of a nonlinear optical material in the focal region along the propagation direction of the beam and registering the variation of the on-axis intensity of the laser beam by a photodetector.
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