circularly polarized light SHG

[sunxl]

Dear all，

For a two-dimensional magnetic system that includes SOC, I want to calculate the SHG components under left-handed and right-handed circularly polarized light.(I am currently using version 2.0.0 of Lumen)

1、How should we set up for electric fields 1 and 2 in nonlinear calculations ?

Code: Select all

Field1_Freq= 0.100000      eV    # [RT Field1] Frequency
Field1_Int=  1000.00       kWLm2 # [RT Field1] Intensity
Field1_Width= 0.000000     fs    # [RT Field1] Width
Field1_kind= "SOFTSIN"           # [RT Field1] Kind(SIN|COS|RES|ANTIRES|GAUSS|DELTA|QSSIN)
Field1_pol= "linear"             # [RT Field1] Pol(linear|circular)
% Field1_Dir
 1.000000 | 0.000000 | 0.000000 |        # [RT Field1] Versor
%
Field2_Freq= 0.100000      eV    # [RT Field2] Frequency
Field2_Int= 0.000000       kWLm2 # [RT Field2] Intensity
Field2_Width= 0.000000     fs    # [RT Field2] Width
Field2_kind= "none"              # [RT Field2] Kind(SIN|COS|RES|ANTIRES|GAUSS|DELTA|QSSIN)
Field2_pol= "linear"             # [RT Field2] Pol(linear|circular)
% Field2_Dir
 0.000000 | 0.000000 | 0.000000 |        # [RT Field2] Versor
%

2、In the "fixsymm.in" file, what should be done when removing symmetry?

Best,
sunxl

[Davide Sangalli]

Dear sunxl,
I think the answer in the lumen forum already targets your questions: https://www.lumen-code.org/forum/viewtopic.php?t=35

Best,
D.