Abstract
In this erratum, the function in equation (7) of Opt. Lett. 44, 2843 (2019) [CrossRef] has been corrected.
© 2019 Optical Society of America
The function in Eq. (7) of [1], “”, should be corrected as “.”
REFERENCE
1. S. H. Zhang, J. H. Zhou, M.-C. Zhong, and L. Gong, Opt. Lett. 44, 2843 (2019). [CrossRef]