Abstract
A complete complex amplitude reconstruction method for the
determination of the laser beam quality factor
based on the multiple exposure of a
quadriwave lateral shearing interferometer (QWLSI) is presented. The
theoretical analysis and simulation of the influence of the
information in the small signal area on the calculation of the
factor is provided. The experimental
results demonstrate that the new method can be an accurate means to
measure the factor. The proposed method can avoid
the influence of phase inaccuracy in the small signal area of the
interferogram, during the measurement of the factor.
© 2017 Optical Society of
America
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