TY - JOUR
T1 - Determination of the ten second order intensity moments
AU - Eppich, B.
AU - Gao, C.
AU - Weber, H.
PY - 1998
Y1 - 1998
N2 - The general astigmatic beam can be characterized by its ten second order moments in first order approach. Most intensity moments, except the beam twist, can be determined by measuring the intensity in a reasonable number of positions around the waist of the beam. The beam twist is determined by applying a rotated cylindrical lens. The ten intensity moments of two kinds of astigmatic beam were determined: a simple astigmatic TEM8,0 Hermite-Gaussian beam and a twisted beam generated from the TEM8,0 mode. The experimental results were compared with the theoretical calculations and demonstrate that the ten second order moments of a beam can be determined in a rather simple way.
AB - The general astigmatic beam can be characterized by its ten second order moments in first order approach. Most intensity moments, except the beam twist, can be determined by measuring the intensity in a reasonable number of positions around the waist of the beam. The beam twist is determined by applying a rotated cylindrical lens. The ten intensity moments of two kinds of astigmatic beam were determined: a simple astigmatic TEM8,0 Hermite-Gaussian beam and a twisted beam generated from the TEM8,0 mode. The experimental results were compared with the theoretical calculations and demonstrate that the ten second order moments of a beam can be determined in a rather simple way.
KW - Beam twist
KW - First order characterization
KW - Second order moments
UR - https://www.scopus.com/pages/publications/0032108167
U2 - 10.1016/S0030-3992(98)00063-2
DO - 10.1016/S0030-3992(98)00063-2
M3 - Article
AN - SCOPUS:0032108167
SN - 0030-3992
VL - 30
SP - 337
EP - 340
JO - Optics and Laser Technology
JF - Optics and Laser Technology
IS - 5
ER -