THz radiation propagation in time-domain
THz fields are described as time traces of (E,B) vector fields arranged in a (rectangular) grid. For propagation the Kirchhoff integral is evaluated directly.
This feature branch implements individual timing for then traces comprising one dataset (screen). This enables a great reduction in neccesary storage for screens angled with respect to the direction of propagation. Still, all traces have common time-step and length.
file format file.hdf5
- dataset "ObservationPosition"
- array NxNy3 double -- Vector[Nx,Ny]
- attributes Nx, Ny
- dataset "ObservationTime"
- array Nx*Ny double -- t0
- attributes Nt, dt
- dataset "ElMagField"
- array NxNyNt*6 double -- FieldTrace[Nx,Ny]
- no attributes
BUG:
- (fixed) intensity too large (factor sqrt(2)) when propagating from angled screen
- (fixed) large longitudinal E field when propagating from angled screen
- polarity is reversed when comparing a single and a double propagation step
- ghost pulse at the border of the screen (spurious diffraction effect)