April 2012
Intermediate to advanced
454 pages
14h 12m
English
4.2 Optical Constants
In this section, the relationship between different optical constants in a conductor or dielectric and their interrelationship will be presented. The starting equations are the following four Maxwell's equations related to the behavior of electromagnetic waves.
(4.1c) ![]()
(4.1d) ![]()
where F and H are the electric and magnetic fields,
, and J and ρ are the current and charge densities, respectively. The electric and magnetic fields are expressed in terms of vector potential A and scalar potential
as follows:
(4.2) ![]()
(4.3) ![]()
Taking curl of the second Maxwell equation and using the third one, we may write
(4.4)
We note that . It is usual to assume the Coulomb gage ...
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