1. Ecole Centrale School of Engineering (ECSoE), Mahindra University, Hyderabad 500043, India
2. Photonic Materials Metrology Sub-Division, Advanced Materials and Device Metrology Division, CSIR-National Physical Laboratory, Dr. K. S. Krishnan Road, New Delhi 110012, India
3. Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India