Electromagnetic field simulator and electromagnetic field simulating program product

An electromagnetic field simulating program product for repeatedly calculating a space distribution of an electromagnetic field at a next point in time using a distribution of an electromagnetic field in a 3-dimensional space, and directing a computer to realize the functions including:

• a 3-dimensional electromagnetic field calculating function of calculating a distribution of an electric field and a distribution of an magnetic field on the entire 3-dimensional space;
• a 2-dimensional electromagnetic field calculating function of calculating a distribution of an electric field and a distribution of an magnetic field on a 2-dimensional space on a cut plane obtained by cutting the 3-dimensional space by a plane;
• a wave source setting function of setting an excitation condition of generating an electromagnetic wave by using a calculation result of the 2-dimensional electromagnetic field calculating function;
• and
• a wave source generating function of generating an electromagnetic wave by forcibly vibrating a part of the electric field and the magnetic field in the 3-dimensional space on a basis of the excitation condition set by the wave source setting function.