1. Nonlinear Control Strategies Inc., Tucson,
Arizona 85704, USA
2. Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, USA
3. Department of Physics and Materials Sciences Center, Philipps-Universität Marburg, Renthof 5, 35032 Marburg,
Germany
4. Center for Photonics Innovation and School of Electrical, Computer, and Energy Engineering, Arizona State University, Tempe, Arizona
85287, USA