An error was made in the analytical fit to the data in Fig. 2(c) of Zhang et al. [Opt. Lett. 37, 1856 (2012)]. We provide here a corrected figure.
© 2013 Optical Society of America
1. H. Zhang, S. Virally, Q. Bao, L. Kian Ping, S. Massar, N. Godbout, and P. Kockaert, Opt. Lett. 37, 1856 (2012). [CrossRef]