Abstract

This paper presents a two-shot common-path phase-shifting interferometer that consists of a 4f optical system with two windows in the input plane and a Ronchi grating in the Fourier plane, and generates two adjacent interferograms using only diffraction orders 0 and +1 and 0 and 1. Four phase-shifted interferograms can be obtained in two shots by modulating two linear polarizers with angle difference of π/4 and translating the grating with only an unknown phase shift. An algorithm similar to the standard four-step algorithm is used to retrieve the phase of a specimen, and it requires no knowledge of the phase shift introduced by translation of the grating. The validity and repeatability of the proposed method is proved through simulations and experiments.

© 2014 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Parallel two-step spatial carrier phase-shifting common-path interferometer with a Ronchi grating outside the Fourier plane

Mingguang Shan, Bengong Hao, Zhi Zhong, Ming Diao, and Yabin Zhang
Opt. Express 21(2) 2126-2132 (2013)

Parallel-quadrature on-axis phase-shifting common-path interferometer using a polarizing beam splitter

Hongyi Bai, Mingguang Shan, Zhi Zhong, Lili Guo, and Yabin Zhang
Appl. Opt. 54(32) 9513-9517 (2015)

Tri-window common-path interferometer for quantifying phase objects

Ming Diao, Bengong Hao, Mingguang Shan, Ying Wang, Zhong Zhi, and Yabin Zhang
Appl. Opt. 53(24) 5453-5459 (2014)

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 (9)

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 (8)

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