Mahendar Kumbham

3 Questions 8 Answers 0 Followers

Questions related from Mahendar Kumbham

What it the physical meaning of negative scattering cross-section?

I am modelling extinction cross-section of scatterer in COMSOL. When I give refractive index x+i*y for scatterer, the calculated scattering cross-section is negative and absorption cross-section...

15 May 2015 1,970 6 View

What is the nature of polarization of vortex beam produced by spiral phase plate?

Vortex beam is produced by spiral phase plate in STED microscopy, for example. What is the nature of its polarization? radial? azimuth? or mixed of both (spiral)? does it depend on input...

14 April 2015 7,859 2 View

Is anyone familiar with the permeability and permittivity values of a conventional glass slide (soda lime glass)?

Can anybody help me to find the permittivity and permeability values of a Glass slide for modelling purposes? I assume microscopic glass slides are made of soda lime glass. Although, I could not...

22 October 2014 6,552 3 View