Optical Properties of Phosphate and Pyrophosphate Compounds

Vijay B. Pawade (Assistant Professor, Department Of Applied Physics, Laximarayan Institute Of Technology,

Ritesh L. Kohale (Assistant Professor And Head Of Department, Sgm College, Nag., India)

Abdul Hakeem Deshmukh (Assistant Professor, Institute Of Physics, Polish Academy Of Sciences, Warsaw,

Sanjay J. Dhoble (Professor, Department Of Physics, R.t.m. Nagpur University, Nagpur, India)