1. Optics and Microfluidics Instrumentation Laboratory, Instrumentation and Applied Physics Dept, Indian Institute of Science, CV Raman Road, Bangalore, Karnataka, India, 560012
2. FEMTO FabULLAS, Department of Physics, Sri Sathya Sai Institute of Higher Learning, Prasanthi Nilayam, Andhra Pradesh 515134, India
3. Department of Chemistry, Sri Sathya Sai Institute of Higher Learning, Prasanthi Nilayam, Andhra Pradesh 515134, India