Correction to: Light: Science & Applications (2015) 4, e228; doi:10.1038/lsa.2015.1; published online 2 January 2015

In this paper, in the "Materials and methods" section, the type of laser from IMRA America, Inc. was wrongly given as Er-fiber. The correct type is Yb-doped fiber.

We apologize for any inconvenience this may have caused.