1. Department of Chemistry, University of Florida, P.O. Box 117200, Gainesville, Florida 32611, United States
2. Department of Chemistry, University of Texas at San Antonio, San Antonio, Texas 78249, United States
3. ILX Lightwave, Bozeman, Montana 59717, United States
4. Physics Department, Montana State University, Bozeman, Montana 59715, United States
5. National Institute for Chemical Physics and Biophysics, Tallinn, 12618, Estonia