1. National Space Institute, Technical University of Denmark, Bld. 348, Ørsteds Plads, Kgs. Lyngby 2800, Denmark
2. Department of Electrical and Computer Engineering, Florida International University, Miami, Florida 33174, United States
3. Department of Photonics Engineering, Technical University of Denmark, Bld. 345A, Ørsteds Plads, Kgs. Lyngby 2800, Denmark
4. Photonics Initiative, Advanced Science Research Center, City University of New York, New York, New York 10031, United States
5. Physics Program, Graduate Center, City University of New York, New York, New York 10016, United States