The referenced article [Opt. Lett. 43, 4615 (2018) [CrossRef] ] has been retracted by the authors.
© 2020 Optical Society of America
Figure 4(b) of the published paper  includes data that was not independently produced. Instead, it was duplicated from data and a graphic representation from Fig. 3 in a previous, unrelated scientific study performed by another group . The authors’ internal research effort to reproduce the data in Fig. 4(b) has been unsuccessful.
This finding was confirmed by an internal investigation coordinated by the University of Arizona’s Office of Research, Innovation and Impact.
The original article was published 19 September 2018 and was retracted on 15 October 2020.
1. B. Amirsolaimani, P. Gangopadhyay, A. P. Persoons, S. A. Showghi, L. J. LaComb, R. A. Norwood, and N. Peyghambarian, Opt. Lett. 43, 4615 (2018). [CrossRef]
2. C. L. Lowery, J. Q. Campbell, J. D. Wilson, P. Murphy, H. Preissl, S. F. Malak, and H. Eswaran, Am. J. Obstet. Gynecol. 188, 1491 (2003). [CrossRef]