1. Photonic Systems
Laboratory, Micro and Nanotechnology Laboratory, Department of Electrical
and Computer Engineering, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States
2. Quantitative
Light
Imaging Laboratory, Beckman Institute for Advanced Science and Technology,
Department of Electrical and Computer Engineering, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States
3. Department
of Physics and Astronomy, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States