Abstract

We focused the radial polarized light beam onto a sub-wavelength annular aperture (SAA) and compared the characteristics of SAA and traditional objective lens. We propose that SAA is a continuous numerical aperture optical element.

© 2008 Optical Society of America

PDF Article

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