1. Liquid Crystal Research Laboratory, Department of Physics, University of Lucknow, Lucknow 226007, India
2. Experimental Quantum Interferometry and Polarization Group, Physics Department, IIT Delhi, Delhi 110016, India
3. Institute of Chemistry, Military University of Technology, 00-908 Warsaw, Poland
4. Soft Condensed Matter Laboratory, Raman Research Institute, Bangalore 560080, India