Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Carrier squeezing interferometry with π/4 phase shift: phase extraction in the presence of multi-beam interference

Not Accessible

Your library or personal account may give you access

Abstract

Multi-beam interference exists in testing high-reflectivity surfaces with a Fizeau interferometer. In this paper, the multi-beam interference intensity was estimated as the sum of the first six order harmonics using the Fourier series expansion. Then, by adopting carrier squeezing interferometry with a π/4 phase shift, an algorithm was proposed to extract the phase from multi-beam interferograms. To ensure the separation of the lobes of phase-shift errors and the phase in the frequency domain, conditions of the necessary linear carrier in the proposed algorithm were derived. Simulation results indicated that the phase retrieving precision is better than PV 0.008λ and RMS 0.001λ, even when the reflection coefficient of the test surface is as high as 0.9 and the phase shift varies within π/4±π/20. Compared with the other algorithms, the proposed algorithm for multi-beam interference was validated by its good performance in the experiments, especially when the phase-shift error exists.

© 2016 Optical Society of America

Full Article  |  PDF Article
More Like This
Advanced carrier squeezing interferometry: a technique to suppress gamma distortion in fringe projection profilometry

Ronggang Zhu, Bo Li, Rihong Zhu, Yong He, and Jianxin Li
Appl. Opt. 56(9) 2556-2562 (2017)

Carrier squeezing interferometry: suppressing phase errors from the inaccurate phase shift

Bo Li, Lei Chen, Wulan Tuya, Suodong Ma, and Rihong Zhu
Opt. Lett. 36(6) 996-998 (2011)

Correlated errors in phase-shifting laser Fizeau interferometry

Peter J. de Groot
Appl. Opt. 53(19) 4334-4342 (2014)

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

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

Figures (15)

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

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

Equations (29)

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

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

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved