1. Center for High Technology Materials and Department of Physics and Astronomy, University of New Mexico, Albuquerque, NM 87106, USA.
2. Laser Center of the University of Latvia, Riga, LV-1586, Latvia.
3. Sandia National Laboratories, Albuquerque, NM 87123, USA.
4. NuevoMR LLC, Albuequerque, NM 87106, USA.
5. Department of Physics, University of California, Berkeley, CA 94720, USA.
6. ODMR Technologies Inc., El Cerrito, CA 94530, USA.