We correct several errors in a recently published paper [J. Opt. Soc. Am. B 31, 1712 (2014) [CrossRef] ].
© 2015 Optical Society of America
We have found several errors in our recently published paper . The appearance of in Eq. (15) is redundant, as the corresponding heat loads have been included in . Equation (15) in paper  should be replaced by
There is a clerical error in Eq. (18): a minus sign should be added at the right-hand side of the equation.
The simulation results alter with the change of Eq. (15). Figures 4 and 5 in paper  should be replaced by the following Figs. 1 and 2, respectively. Figure 1 shows that the copumping scheme for cooling enhancement only works when sample temperature is above 210 K. Figure 2 shows that a maximum cooling power density (MCPD) of could be achieved in the 1.2% crystal. The corresponding cooling efficiency is about 4.2%.
These changes do not affect the qualitative conclusions of paper .
1. G. Z. Dong and X. L. Zhang, “Efficient and enhanced optical refrigeration beyond 2 μm in Ho3+-doped solids via copumping scheme,” J. Opt. Soc. Am. B 31, 1712–1718 (2014). [CrossRef]