1. Department of Physics, Punjabi University, Patiala, India
2. Department of Applied Sciences, IKG Panjab Technical University, Kapurthala, Punjab, India
3. Department of Physics, Panjab University, Chandigarh, India
4. Measurement Standards Laboratory of New Zealand, Callaghan Innovation, Lower Hutt, Wellington, New Zealand
5. The Dodd-Walls Centre for Photonic and Quantum Technologies, University of Otago, Dunedin, New Zealand
6. Department of Physics, Punjabi University, Patiala, Punjab, India