Abstract
Diffraction gratings are used in measurement devices for scientific and
industrial applications. As it is well known, self-images appear in the near
field when diffraction gratings are illuminated with a coherent beam, such
as a plane wave. This effect has been analyzed in depth and its behavior is
well known under ideal grating and illumination conditions. Usually, the
illumination beam is not perfectly collimated but it presents a certain
degree of aberration. In this work we analyze the behavior of the
self-images of an ideal amplitude grating when it is illuminated by an
aberrated beam. As it is expected the contrast of the self-images decrease
when the order of them increases and also when the aberration degree
increases. In some cases, contrast inversion is also produced for high
degree aberrations.
© 2011 IEEE
PDF Article
More Like This
Cited By
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica Member Subscription