1. a Department of Physics and Institute for Space and Terrestrial Science, York University , North York, Ontario, Canada , M3J 1P3
2. b Department of Optics, Shandong University, Jinan, Shan dong , P. R., China
3. c Department of Biology, York University, North York , Ontario, Canada , M3J 1P3
4. d Centre for Research in Experimental Space Science, York University , North York, Ontario, Canada , M3J lP3