diff options
| -rw-r--r-- | xmds2/Nlevels_with_doppler_with_z_4wm/Nlevels_with_doppler_with_z_4wm.xmds | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/xmds2/Nlevels_with_doppler_with_z_4wm/Nlevels_with_doppler_with_z_4wm.xmds b/xmds2/Nlevels_with_doppler_with_z_4wm/Nlevels_with_doppler_with_z_4wm.xmds index 054d343..36d47a9 100644 --- a/xmds2/Nlevels_with_doppler_with_z_4wm/Nlevels_with_doppler_with_z_4wm.xmds +++ b/xmds2/Nlevels_with_doppler_with_z_4wm/Nlevels_with_doppler_with_z_4wm.xmds @@ -136,7 +136,17 @@ <geometry> <propagation_dimension> z </propagation_dimension> <transverse_dimensions> - <dimension name="t" lattice="1000" domain="(-1e-6, 1e-6)" /> + <!-- IMPORTANT: looks like having a lot of points in time helps with convergence. + I suspect that time spacing should be small enough to catch + all pulse harmonics and more importantly 1/dt should be larger than + the largest detuning (including Doppler shifts). + Unfortunately calculation time is proportional to lattice size + so we cannot just blindly increase it. + Some rules of thumb: + * lattice="1000" domain="(-1e-6, 1e-6)" + was good enough detunings up to 1.5GHz=9.8rad/s notice that 1/dt=500MHz + --> + <dimension name="t" lattice="5000" domain="(-1e-6, 1e-6)" /> <dimension name="v" lattice="100" domain="(V_maxwell_min, V_maxwell_max)" /> </transverse_dimensions> </geometry> |