NBN EN ISO 11146-2 : 2005
Current
The latest, up-to-date edition.
LASERS AND LASER-RELATED EQUIPMENT - TEST METHODS FOR LASER BEAM WIDTHS, DIVERGENCE ANGLES AND BEAM PROPAGATION RATIOS - PART 2: GENERAL ASTIGMATIC BEAMS
01-12-2013
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
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