1. University of Kerala, Department of Optoelectronics, Kariavattom, Trivandrum 695581, Kerala, IndiabMohandas College of Engineering and Technology, Anad, Thiruvananthapuram 695544, India
2. University of Kerala, Department of Optoelectronics, Kariavattom, Trivandrum 695581, Kerala, India
3. CSIR-National Physical Laboratory, Radio and Atmospheric Sciences Division, Dr. K. S. Krishnan Road, New Delhi 110012, India
4. National Atmospheric Research Laboratory, Gadanki, Tirupati 517502, India
5. Geetanjali College of Engineering and Technology, Cheeryal, Keesara, Hyderabad 501301, Andhra Pradesh, India