dipole_radiation.h File Reference

#include "focus3d.h"

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Classes
class	dipole_radiation
	A class. More...
Defines
#define	dipole_parameters focus3d_parameters

Detailed Description

Defines dipole_radiation class.

Date:: June 2006 - May 2008 Defines a class dipole_radiation. It is used for calculating the vectorial far-field distribution due to the radiation from dipole distribution near the focus of an objective. The field distribution at a far-field point R = (X,Y,Z) from a dipole 'p' located at r = (x,y,z) is -[1/4.pi.R^3].exp(i.k.f).( (R-r) x (R-r) x p). Note that R and r are coordinate vectors from the origin joining the corresponding points. If dipoles are distributed through out a region of [xmin:xmax],[ymin:ymax] and [zmin:zmax] then the far-field amplitude at R would be a three-dimensional integration of amplitudes from all the individual points (x,y,z). The 3d integration is implemented ucing on Simpson 1/3 rule. If the surface of the collecting lens is described in (f, $\theta$ , $\phi$ ) coordinates, where f is the focal length of the lens, the above integration would provide the amplitude on this surface. This class also provides a method to calculate the radiation pattern after refraction at the spherical surface of the lens.

#define dipole_parameters focus3d_parameters

dipole_parameters is an alias to focus3d_parameters class