1. Nonlinear Optical Materials Laboratory
2. School of Physics
3. Bharathidasan University
4. Tiruchirappalli-620 024
5. India
6. Light and Matter Physics Group
7. Raman Research Institute
8. Bangalore-560 080
9. Department of Physics
10. Gandhigram Rural Institute-Deemed University
11. Dindigul-624 302
12. National Institute of Technology
13. Tiruchirappalli-620 015