1. Department of Chemistry University of Copenhagen Universitetsparken 5 2100 København Ø Denmark
2. Joint Centre for Extreme Photonics National Research Council and University of Ottawa Ottawa ON, K1A 0R6 Canada
3. Department of Physics University of Ottawa 150 Louis-Pasteur Pvt Ottawa ON, K1N 6N5 Canada
4. Department of Chemistry University of Ottawa 150 Louis-Pasteur Pvt Ottawa ON K1N 6N5 Canada
5. National Research Council Canada 100 Sussex Drive Ottawa ON K1N 5A2 Canada
6. King Fahd University of Petroleum and Minerals Bldg. 15, Rm. 6124 Dhahran 31261, Kingdom of Saudi Arabia