Patent ID: 6678042
Filing Date: 2004-01-13
Classification: G01J

Abstract:
An apparatus capable of simultaneous measurement of the radius of a focused laser beam, focus position, power, power density, divergence and quality of a laser beam comprising:a nonlinear optical material; means for holding said nonlinear optical material; means for scanning said nonlinear optical material through the focal region of said laser beam at a constant speed; detector means for receiving a portion of said laser beam and providing a signal according to the changes of the intensity of said laser beam resulting from scanning said nonlinear optical material through said focal region; data acquisition and processing means connected to said detector means for receiving said signal, processing and outputting information about the waist size, position of the focus, power, power density, divergence and quality of said laser beam, its divergence, or only a selection of one or more of those parameters; indicator means for providing visual information about the measured selection of laser beam parameters.