1. Nonlinear
Optical Materials Laboratory, School of Physics, Bharathidasan University, Tiruchirappalli - 620 024, Tamil Nadu, India
2. Functional
Materials Division, CSIR − Central Electrochemical Research Institute, Karaikudi - 630 006, Tamil Nadu, India
3. Applied
Nuclear Physics Division, Saha Institute of Nuclear Physics, 1/AF
Bidhannagar, Kolkata - 700064, India
4. on leave
from Department of Physics, Amrita School of Arts and Science, Amrita Vishwa Vidyapeetham, Kollam - 690525, Kerala, India