ALGORITHM FOR PHASE-DIFFERENCE MEASUREMENT IN PHASE-SHIFTING INTERFEROMETRY

Authors
VIKRAM CS WITHEROW WK TROLINGER JD
Citation
Cs. Vikram et al., ALGORITHM FOR PHASE-DIFFERENCE MEASUREMENT IN PHASE-SHIFTING INTERFEROMETRY, Applied optics, 32(31), 1993, pp. 6250-6252
Citations number
18
Categorie Soggetti
Optics
Journal title
Applied optics → ACNP
ISSN journal
00036935
Volume
32
Issue
31
Year of publication
1993
Pages
6250 - 6252
Database
ISI
SICI code
0003-6935(1993)32:31<6250:AFPMIP>2.0.ZU;2-9
Abstract
A phase-shifting algorithm is proposed and experimentally demonstrated for phase-difference analysis. The method involves only three steps, the original and two equal in amount but unknown phase steps for each stage. Only six frames of data are thus sufficient for the phase-diffe rence analysis between two stages. Real-time holographic interferometr y with a concentration change in a sugar-water solution in a test cell is presented for experimental verification.