I'm trying to do some scattering calculations with OTT in MATLAB. I'm able to follow the beam_visualization.m example and calculate the scattered fields when the trap beam (a gaussian beam) is offset from the particle. As I understand it, everything is in the particle's center-of-mass frame. I want to transform the far-field solutions back into the lab frame after the scattering calculation. Could you advise how I should proceed? Currently, translation in Y (using .translateXyz) seems to also cause some tilt in the far-field solutions without applying any scattering matrix. I attached a plot to show how the beam profile in blue in the translated Y dimension looks skewed in the particle's COM frame in the far field regime. I want to be in a rest frame of this incoming trap beam, where I think the beam profiles in any XY planes would look translated and not skewed. Any suggestions are appreciated.
Hi Dr. Issac Lenton,
I'm trying to do some scattering calculations with OTT in MATLAB. I'm able to follow the beam_visualization.m example and calculate the scattered fields when the trap beam (a gaussian beam) is offset from the particle. As I understand it, everything is in the particle's center-of-mass frame. I want to transform the far-field solutions back into the lab frame after the scattering calculation. Could you advise how I should proceed? Currently, translation in Y (using .translateXyz) seems to also cause some tilt in the far-field solutions without applying any scattering matrix. I attached a plot to show how the beam profile in blue in the translated Y dimension looks skewed in the particle's COM frame in the far field regime. I want to be in a rest frame of this incoming trap beam, where I think the beam profiles in any XY planes would look translated and not skewed. Any suggestions are appreciated.
Thanks, Yuqi