picongpu-users@hzdr.de Mailing List Archive

Hi Bifeng Lei,

Okay - that looks fine (except that you time step is a bit short for numerical stability in long simulation runs, better would be ~1.12969e-16).

Why does your picture only show one “imshow cell”/colored cell per ~10-50 cells?
Did you reduce the resolution during analysis?
Might the transversal structures we see in the picture be an aliasing effect? (can be avoided by setting plt.imshow( ... , interpolation="nearest")

Could you please re-plot the picture in 1D, be selecting the center x-position and plotting a lineout of the field along the y-axis with a mark for each value. That would ease determining if there are aliasing effects in the imshow picture.

Best,
Richard

Am 08.02.2017 um 11:37 schrieb Bifeng Lei:

Dear Richard,

Thank you so much for your reply.

A 0.8um laser is used. The resolution is given as:

dx and dz: 0.0743e-6m --> 0.8/0.0743=10.7

dy: 0.0443e-6m --> 0.8/0.0443=18

dt : 3.0e-17s

By the way, is there a way to set the polarization angle with respect to x/z-axis?

All best

Bifeng Lei

On 02/08/2017 11:28 AM, Richard Pausch wrote:

longitudinal resolution is too low?
With best regards,
Ph.D Bifeng Lei
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