Paramasivam SenthilkumaranParamasivam Senthilkumaran is currently working as a full Professor in the Department of Physics, Indian Institute of Technology Delhi, India. His research interests are optical beam shaping, optical phase singularities, Berry and Pancharatnam topoloical phases, fiber optics, holography, non-destructive testing techniques, shear interferometry, Talbot interferometry, speckle metrology and non-linear optics. Read More Read Less