Author Affiliations

Tenio Popmintchev,^1,a,* Brendan Reagan,^2,a David M. Gaudiosi,^1,a Michael Grisham,^2,a Mark Berrill,^2,a Oren Cohen,^1,a Barry C. Walker,^3,a Margaret M. Murnane,^1,a Henry C. Kapteyn,^1,a and Jorge J. Rocca^2,a

^aNSFERC for Extreme Ultraviolet Science and Technology

¹JILA and Department of Physics, University of Colorado, Campus Box 440, Boulder, CO, 80309-0440

²Department of Electrical and Computer Engineering, Colorado State University, Fort Collins, CO 80523

³Department of Physics and Astronomy, University of Delaware, 223 Sharp Laboratory, Newark, DE19716

^*Corresponding author: Tenio.Popmintchev@colorado.edu