Abstract

The dark rings of the Airy pattern in the focal region of a microwave lens form phase singularities. In an error-free lens these dark rings lie on the surface of a sphere. It is shown that in the presence of primary aberrations the line singularities remain closed loops and the phase behavior near them is similar to that in the ideal lens. Third-order astigmatism of relatively small amounts produces a marked distortion of the shape of the line singularity.

© 1961 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
How phase and amplitude aberrations destabilize the phase singularities in the focal field of a lens

G. P. Karman and J. P. Woerdman
J. Opt. Soc. Am. A 15(11) 2862-2868 (1998)

High-resolution phase imaging of phase singularities in the focal region of a lens

J. N. Walford, K. A. Nugent, A. Roberts, and R. E. Scholten
Opt. Lett. 27(5) 345-347 (2002)

On the Axial Phase Anomaly for Microwave Lenses*

G. W. Farnell
J. Opt. Soc. Am. 48(9) 643-647 (1958)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

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 OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (6)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (2)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription