1. Soraa Inc., Fremont, California, USA
2. Esposito Research, Boston, Massachusetts, USA
3. Department of Architectural Engineering, Pennsylvania State University, University Park, Pennsylvania, USA
4. Pacific Northwest National Laboratory, Portland, Oregon, USA
5. ESAT/Light & Lighting Laboratory, KU Leuven, Ghent, Belgium
6. Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia, Canada