Is it currently possible to specify two or more simultaneous 'FIELD_TYPE’s, possibly with different time dependencies and directions?
I don’t think such an option is available.
Does not exist at present although it would not be that hard to add. When we want to simulate unpolarized absorption, we run 3 separate simulations with perturbations in x, y, and z (one at a time).
OK.
I’ve created a new branch of the dev version to add an arbitrary tabulated time-dependent field from an external file. Will work on that when I have time.