Abstract

Using a modified Mach–Zehnder interferometer for electromagnetic 3-cm waves, we measured the amplitude and phase distributions in the diffraction near fields of dielectric bars with rectangular cross sections (sizes smaller than 1 square wavelength, λ) with high spatial resolution. Computer-controlled measurements were performed with high accuracy for distances 0.1λ–2λ behind the rear of the weak phase objects (phase shift Δφ ≪ 1 rad) that consist of foam materials (refractive index n = 1.02) or of thin plastic strips (n = 1.65, thickness dλ). The experimental results agree with field computations made with the moment method.

© 1991 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Concepts and Techniques of Microwave Optics

Réal Tremblay and Albéric Boivin
Appl. Opt. 5(2) 249-278 (1966)

Structure determination of weak phase objects from interferometric near-field measurements

Marco A. Krumbügel and Michael Totzeck
Appl. Opt. 33(34) 7864-7874 (1994)

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 (7)

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 (4)

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

Metrics

You do not have subscription access to this journal. Article level metrics 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