Assertion: beam's dimension | /r/HasProperty | astigmatic beams
Facets:
Source sentences:
text: Beams with elliptical cross-sections, or with waists at different positions in z for the two transverse dimensions (astigmatic beams) can also be described as Gaussian beams, but with distinct values of w 0 and of the z = 0 location for the two transverse dimensions x and y.
text: Also common are beams with waist positions which are different for the two transverse dimensions, called astigmatic beams.