EN ISO 11146-2:2005

Name: EN ISO 11146-2:2005
Brand: CEN

Superseded

View Superseded by

Lasers and laser-related equipment - Test methods for laser beam widths, divergence angles and beam propagation ratios - Part 2: General astigmatic beams (ISO 11146-2:2005)

Superseded date

07-31-2021

Published date

02-15-2005

Publisher

Comite Europeen de Normalisation

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

ISO 11146-2:2005 specifies methods for measuring beam widths (diameter), divergence angles and beam propagation ratios of laser beams. ISO 11146-2:2005 is applicable to general astigmatic beams or unknown types of beams. For stigmatic and simple astigmatic beams, ISO 11146-1 is applicable.Within ISO 11146-2:2005, the description of laser beams is accomplished by means of the second order moments of the Wigner distribution rather than physical quantities such as beam widths and divergence angles. However these physical quantities are closely related to the second order moments of the Wigner distribution. In ISO/TR 11146-3, formulae are given to calculate all relevant physical quantities from the measured second order moments.

Committee	CEN/TC 123
DevelopmentNote	Supersedes EN ISO 11146 (05/2006)
DocumentType	Standard
PublisherName	Comite Europeen de Normalisation
Status	Superseded
SupersededBy	EN ISO 11146-2:2021
Supersedes	EN ISO 11146 : 1999

Standards	Relationship
ONORM EN ISO 11146-2 : 2005	Identical
DIN EN ISO 11146-2:2005-05	Identical
SN EN ISO 11146-2 : 2006	Identical
BS EN ISO 11146-2:2005	Identical
NS EN ISO 11146-2 : 2005	Identical
I.S. EN ISO 11146-2:2005	Identical
NBN EN ISO 11146-2 : 2005	Identical
PN EN ISO 11146-2 : 2005	Identical
UNI EN ISO 11146-2 : 2005	Identical
ISO 11146-2:2005	Identical
NEN EN ISO 11146-2 : 2005	Identical
NF EN ISO 11146-2 : 2005	Identical
UNE-EN ISO 11146-2:2006	Identical

ISO/TR 11146-3:2004	Lasers and laser-related equipment Test methods for laser beam widths, divergence angles and beam propagation ratios Part 3: Intrinsic and geometrical laser beam classification, propagation and details of test methods
ISO 11146-1:2005	Lasers and laser-related equipment Test methods for laser beam widths, divergence angles and beam propagation ratios Part 1: Stigmatic and simple astigmatic beams
ISO 11145:2016	Optics and photonics Lasers and laser-related equipment Vocabulary and symbols
IEC 61040:1990	Power and energy measuring detectors, instruments and equipment for laser radiation