Dear Steven and Meep Users: I have some question about using C++ interface and finding LDOS. In fact I want to calculate the LDOS in some 3D structure with the aid of green tensor by using a short pulse (delta like) in Ex Field and then observing the Ex ,Ey and Ez elsewhere. But I wonder if I should use a delta like *source* or a step function in the following command.
*add_point_source(Ex,* *source**, vec(0,0,0), polar(1.0 , 0.0));* That is I wonder if the "*add_point_source*" command stimulates the Current Jx or the field Ex! also referring to "*Electromagnetic Green's function calculation with finite difference time domain method. Dmitry N. Chigrin*" the above method for finding Green tensor could lead to virtual electric dipole on computational grid witch is accumulated with time. Also the PML region could cause some trouble. Is there any straight forward method to overcome these problems in 3D? Please help me on finding LDOS using meep. thanks in advance -- Yours Sincerely Majid
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