Add to BibSonomy
Abstract
In dual or multiwavelength interferometry, the traditional equivalent wavelength method is widely used for phase recovery to enlarge the unambiguous measurement range (UMR). In fact, however, this method ignores information of size and sign (positive or negative) of single wavelength wrapped phases, and the extension of the UMR is not sufficient. For the reflective measurement, the largest UMR of the dual or multiwavelength interferometry is half of the least-common multiple (LCM) of single wavelengths, called the LCM effective wavelength, which is often several times the equivalent wavelength. But why do we often use the equivalent wavelength and seldom use the larger UMR in practice? Existing research reveals that the actual UMR is related to the measurement error of single-wavelength-wrapped phases, and half of the LCM effective wavelength is only the theoretical value. But how do errors affect the UMR? We think the quantitative analysis and description are lacking. In this paper, we continue to study this problem, analyze it in a graphical method, and give quantitative descriptions. The simulation experiments are carried out and verify our analysis.
© 2020 Optical Society of America
Full Article | PDF ArticleMore Like This
Jennifer E. Decker, John R. Miles, Alan A. Madej, Ralph F. Siemsen, Klaus J. Siemsen, Sebastian de Bonth, Krijn Bustraan, Sara Temple, and James R. Pekelsky
Appl. Opt. 42(28) 5670-5678 (2003)
Jiaosheng Li, Qinnan Zhang, Liyun Zhong, Jindong Tian, Giancarlo Pedrini, and Xiaoxu Lu
Opt. Express 28(19) 28140-28153 (2020)
Natalia Munera, Carlos Trujillo, and Jorge Garcia-Sucerquia
Appl. Opt. 61(5) B279-B286 (2022)