Abstract

We describe experiments where Fourier ptychographic microscopy (FPM) and dual-space microscopy (DSM) are implemented for imaging photonic crystals using a hemispherical digital condenser (HDC). Phase-recovery imaging simulations show that both techniques should be able to image photonic crystals with a period below the Rayleigh resolution limit. However, after processing the experimental images using both phase-recovery algorithms, we found that DSM can, but FPM cannot, image periodic structures with a period below the diffraction limit. We studied the origin of this apparent contradiction between simulations and experiments, and we concluded that the occurrence of unwanted reflections in the HDC is the source of the apparent failure of FPM. We thereafter solved the problem of reflections by using a single-directional illumination source and showed that FPM can image photonic crystals with a period below the Rayleigh resolution limit.

© 2018 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Fourier ptychographic microscopy using an infrared-emitting hemispherical digital condenser

Sanchari Sen, Ishtiaque Ahmed, Batool Aljubran, Ayrton A. Bernussi, and Luis Grave de Peralta
Appl. Opt. 55(23) 6421-6427 (2016)

Illumination-direction multiplexing Fourier ptychographic microscopy using hemispherical digital condensers

Maged Alotaibi, Sueli Skinner-Ramos, Ali Alamri, Bader Alharbi, Mohammed Alfarraj, and Luis Grave de Peralta
Appl. Opt. 56(14) 4052-4057 (2017)

Versatile optical microscopy using a reconfigurable hemispherical digital condenser

Sanchari Sen, Luis Molina, Dongyu Cao, Darshan B. Desai, Ayrton A. Bernussi, and Luis Grave de Peralta
Biomed. Opt. Express 6(3) 658-667 (2015)

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

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