This Publisher’s Note corrects a misprinted unit of measure and clarifies a phrase in Optica 4, 617 (2017) [CrossRef] .
© 2017 Optical Society of America
In , a typographical correction was made to paragraph 3 on page 2, where misprinted unit of measure (W) has been corrected to mW. Also in , a typographical correction was made to paragraph 4 on page 2 replacing “although with twice the (180 mW) pump threshold” with “although with twice higher (180 mW) pump threshold.”
The paper has been corrected online as of 6 June 2017.
1. Q. Ru, N. Lee, X. Chen, K. Zhong, G. Tsoy, M. Mirov, S. Vasilyev, S. Mirov, and K. Vodopyanov, “Optical parametric oscillation in a random polycrystalline medium,” Optica 4, 617–618 (2017). [CrossRef]