Abstract

The conventional phase-shifting interferometry (PSI) algorithm used in white-light phase-shifting interferometry (WLPSI) is not effective for the steep envelope change in the interferogram. We have developed a new 7-step algorithm that is insensitive to the steep contrast change in the envelope of interferogram. Seven-step algorithm includes the envelope change in the interferogram is approximated to be a parabolic function. The detection accuracy of the contrast peak and the accuracy in phase-extraction routine of a 7-step algorithm have been compared with those of a 5-step algorithm.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.