Absorption with light polarized in an arbitrary direction
I want to know if yambo can calculate the light absorbance of a 2D material when the light propagates in an arbitrary direction, i.e. neither parallel nor perpendicular to the surface of the 2D material?
We know that by adjusting the BLongDir parameter, the dielectric function, epsilon_xx (1 0 0), epsilon_yy (0 1 0), epsilon_zz ( 0 0 1), can be obtained.
1.000000 | 0.000000 | 0.000000 | # [BSS] [cc] Electric Field
if BLongDir is set as follows:
1.000000 | 0.000000 | 1.000000 | # [BSS] [cc] Electric Field
then the obtained result is epsilon_xx+epsilon_yy, or other epsilon that discribe the absorption with light propagates in the xz plane with an angle of pi/4 ?
Thanks a lot