1. Institute of Chemical Technology, Vietnam Academy of Science and Technology, Ho Chi Minh City 700000, Vietnam
2. Helen and John C. Hartmann Department of Electrical and Computer Engineering, New Jersey Institute of Technology, Newark, New Jersey 07102, United States
3. Optical Spectroscopy Department, W Trzebiatowski Institute of Low Temperature and Structural Research of the Polish Academy of Sciences, Wrocław 50-013, Poland