EN 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 11146-1:2005)

ISO 11146-1:2005 specifies methods for measuring beam widths (diameter), divergence angles and beam propagation ratios of laser beams.
ISO 11146-1:2005 is only applicable for stigmatic and simple astigmatic beams. If the type of the beam is unknown and for general astigmatic beams ISO 11146-2 is applicable.

Laser und Laseranlagen - Prüfverfahren für Laserstrahlabmessungen, Divergenzwinkel und Beugungsmaßzahlen - Teil 1: Stigmatische und einfach astigmatische Strahlen (ISO 11146-1:2005)

Dieser Teil der ISO 11146 legt Verfahren zur Messung von Strahlabmessungen (Strahldurchmesser), Divergenzwinkeln und Beugungsmaßzahlen von Laserstrahlen fest. Dieser Teil der ISO 11146 darf nur für stigmatische und einfach astigmatische Strahlen angewendet werden. Wenn die Art des Strahles unbekannt ist und bei allgemein astigmatischen Strahlen muss ISO 11146-2 angewendet werden.

Lasers et équipements associés aux lasers - Méthodes d'essai des largeurs du faisceau, angles de divergence et facteurs de limite de diffraction - Partie 1: Faisceaux stigmatiques et astigmatiques simples (ISO 11146-1:2005)

L'ISO 11146-1:2005 spécifie les méthodes pour mesurer les largeurs (diamètres) du faisceau, les angles de divergence et les facteurs de propagation des faisceaux laser.
L'ISO 11146-1:2005 s'applique uniquement aux faisceaux stigmatiques et astigmatiques simples. Si le type de faisceau est inconnu et pour les faisceaux astigmatiques généraux, il convient d'appliquer l'ISO 11146-2.

Laserji in laserska oprema – Preskusne metode za širine laserskega žarka, kota divergence in faktorja širjenja žarkov - 1. del: Stigmatični in enostavni astigmatični žarki (ISO 11146-1:2005)

General Information

• Status: Withdrawn
• Publication Date: 14-Jan-2005
• Withdrawal Date: 20-Jul-2021
• ICS: 31.260 - Optoelectronics. Laser equipment
• Technical Committee: CEN/TC 123 - Lasers and photonics
• Drafting Committee: CEN/TC 123 - Lasers and photonics
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Completion Date: 21-Jul-2021
• Ref Project: SIST EN 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 11146-1:2005)

Relations

• Replaces: EN ISO 11146:1999 - Laser and laser-related equipment - Test methods for laser beam parameters - Beam widths, divergence angle and beam propagation factor (ISO 11146:1999)
• Effective Date: 22-Dec-2008
• Replaced By: EN ISO 11146-1:2021 - 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 11146-1:2021)
• Effective Date: 30-Jan-2019

Standards Content (Sample)

SLOVENSKI STANDARD
01-junij-2005
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GLYHUJHQFHLQIDNWRUMDãLUMHQMDåDUNRYGHO6WLJPDWLþQLLQHQRVWDYQLDVWLJPDWLþQL
åDUNL,62
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 11146-1:2005)
Laser und Laseranlagen - Prüfverfahren für Laserstrahlabmessungen, Divergenzwinkel
und Beugungsmaßzahlen - Teil 1: Stigmatische und einfach astigmatische Strahlen (ISO
11146-1:2005)
Lasers et équipements associés aux lasers - Méthodes d'essai des largeurs du faisceau,
angles de divergence et facteurs de limite de diffraction - Partie 1: Faisceaux
stigmatiques et astigmatiques simples (ISO 11146-1:2005)
Ta slovenski standard je istoveten z: EN ISO 11146-1:2005
ICS:
31.260 Optoelektronika, laserska Optoelectronics. Laser
oprema equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 11146-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
January 2005
ICS 31.260
English version
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 11146-
1:2005)
Lasers et équipements associés aux lasers - Méthodes Laser und Laseranlagen - Prüfverfahren für
d'essai des largeurs du faisceau, angles de divergence et Laserstrahlabmessungen, Divergenzwinkel und
facteurs de limite de diffraction - Partie 1: Faisceaux Beugungsmaßzahlen - Teil 1: Stigmatische und einfach
stigmatiques et astigmatiques simples (ISO 11146-1:2005) astigmatische Strahlen (ISO 11146-1:2005)
This European Standard was approved by CEN on 6 October 2004.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the Central Secretariat or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 11146-1:2005: E
worldwide for CEN national Members.

Foreword
This document (EN ISO 11146-1:2005) has been prepared by Technical Committee ISO/TC 172
"Optics and optical instruments" in collaboration with Technical Committee CEN/TC 123 "Lasers
and laser-related equipment", the secretariat of which is held by DIN.

This European Standard shall be given the status of a national standard, either by publication of
an identical text or by endorsement, at the latest by July 2005, and conflicting national standards
shall be withdrawn at the latest by July 2005.

According to the CEN/CENELEC Internal Regulations, the national standards organizations of
the following countries are bound to implement this European Standard: Austria, Belgium,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary,
Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

Endorsement notice
The text of ISO 11146-1:2005 has been approved by CEN as EN ISO 11146-1:2005 without any
modifications.
INTERNATIONAL ISO
STANDARD 11146-1
First edition
2005-01-15
Lasers and laser-related equipment —
Test methods for laser beam widths,
divergence angles and beam propagation
ratios —
Part 1:
Stigmatic and simple astigmatic beams
Lasers et équipements associés aux lasers — Méthodes d'essai
des largeurs du faisceau, angles de divergence et facteurs de limite
de diffraction —
Partie 1: Faisceaux stigmatiques et astigmatiques simples

Reference number
ISO 11146-1:2005(E)
©
ISO 2005
ISO 11146-1:2005(E)
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ii © ISO 2005 – All rights reserved

ISO 11146-1:2005(E)
Contents Page
Foreword. iv
Introduction . v
1 Scope. 1
2 Normative references. 1
3 Terms and definitions. 1
4 Coordinate systems. 6
5 Test principles. 6
5.1 Applicability. 6
5.2 Beam widths and beam diameter . 6
5.3 Beam divergence angles. 6
5.4 Beam propagation ratios. 6
5.5 Combined measurement of beam waist locations, beam widths, beam divergence angles
and beam propagation ratios. 7
6 Measurement arrangement and test equipment. 7
6.1 General. 7
6.2 Preparation. 7
6.3 Control of environment . 7
6.4 Detector system. 7
6.5 Beam-forming optics and optical attenuators . 8
6.6 Focusing system. 8
7 Beam widths and beam diameter measurement. 8
7.1 Test procedure. 8
7.2 Evaluation. 8
8 Measurement of divergence angles . 10
8.1 Test procedure. 10
8.2 Evaluation. 10
9 Combined determination of beam waist locations, beam widths, divergence angles and
beam propagation ratios . 11
10 Test report. 13
Bibliography . 16

ISO 11146-1:2005(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
ISO 11146-1 was prepared by Technical Committee ISO/TC 172, Optics and photonics, Subcommittee SC 9,
Electro-optical systems.
This first edition of ISO 11146-1, together with ISO/TR 11146-3 cancels and replaces ISO 11146:1999, the
contents of which have been technically revised and augmented.
ISO 11146 consists of the following parts, under the general title Lasers and laser-related equipment — Test
methods for laser beam widths, divergence angles and beam propagation ratios:
 Part 1: Stigmatic and simple astigmatic beams
 Part 2: General astigmatic beams
 Part 3: Intrinsic and geometrical laser beam classification, propagation and details of test methods
(Technical Report)
iv © ISO 2005 – All rights reserved

ISO 11146-1:2005(E)
Introduction
The propagation properties of every laser beam can be characterized within the method of second order
moments by ten independent parameters (see ISO/TR 11146-3). However, due to their higher symmetry most
laser beams of practical interest need fewer parameters for a complete description. Most lasers of practical
use emit beams which are stigmatic or simple astigmatic because of their resonator design.
This part of ISO 11146 describes the measurement methods for stigmatic and simple astigmatic beams while
Part 2 deals with the measurement procedures for general astigmatic beams. For beams of unknown type the
methods of Part 2 shall be applied. Beam characterization based on the method of second order moments as
described in both parts is only valid within the paraxial approximation.
The theoretical description of beam characterization and propagation as well as the classification of laser
beams is given in ISO/TR 11146-3, which is an informative Technical Report and describes the procedures for
background subtraction and offset correction.
In this part of ISO 11146, the second order moments of the power (energy) density distribution are used for
the determination of beam widths. However, there may be problems experienced in the direct measurement of
these quantities in the beams from some laser sources. In this case, other indirect methods of the
measurement of the second order moments may be used as long as comparable results are achievable.
In ISO/TR 11146-3, three alternative methods for beam width measurement and their correlation with the
method used in this part of ISO 11146 are described. These methods are:
 variable aperture method;
 m
...