Fig. 4 Representation surfaces in which the radius of the surface is proportional to the size of the effect. Red indicates negative signs. (To operate: press left mouse-button down and move over the picture) Pictures like those shown were generated with the present release (Ver. 1.1) of  WinTensor.
optical rotation SHG, electrooptics electrogyration
colors as for Ph4C
E, k parallel
E//[100] E//{010]
E//[110] k//[111]p