The frequency given in the caption of Fig. 3 of Bravo et al. [Opt. Lett. 38, 1542 (2013)] was wrong. We provide here a corrected frequency value.
© 2013 Optical Society of America
In a previous Letter , a wrong frequency value was given in the caption of Fig. 3. The corrected frequency, 500 MHz, is given in bold in Fig. 1. This correction does not affect any of the conclusions of .
1. M. Bravo, M. Fernandez-Vallejo, and M. Lopez-Amo, Opt. Lett. 38, 1542 (2013). [CrossRef]