UNI EN ISO 11146-2 : 2005

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Coordinate system
5 Test principles
   5.1 General
   5.2 Spatial second order moments of the Wigner
       distribution
   5.3 Second order moments of the Wigner distribution
   5.4 Derived quantities
6 Measurement arrangement and test equipment
   6.1 General
   6.2 Preparation
   6.3 Control of environment
   6.4 Detector system
   6.5 Beam-forming optics and optical attenuators
7 Measurement of the second order moments
   7.1 General
   7.2 Measurement of the second order moments of power
       density distributions
   7.3 Measurement of all second order moments of the Wigner
       distribution
8 Determination of effective beam propagation ratio
9 Determination of intrinsic astigmatism
10 Determination of the twist parameter
11 Test report
Bibliography

Provides methods for measuring beam widths (diameter), divergence angles and beam propagation ratios of laser beams.