Abstract
Table 1 of an earlier paper [Opt. Lett. 40, 336 (2015) [CrossRef] ] contained an incorrect mathematical expression. The error is rectified here.
© 2016 Optical Society of America
In the second column, fourth row, of Table 1 in [1], the expression should have been , as in Eq. (5).
REFERENCE
1. D. Li, H. Yu, and Y. Chen, Opt. Lett. 40, 336 (2015). [CrossRef]