EN ISO 13694:2018

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Optics and photonics - Lasers and laser-related equipment - Test methods for laser
beam power (energy) density distribution (ISO 13694:2018)
Optik und Photonik - Laser und Laseranlagen - Prüfverfahren für die Leistungs-(Energie
-)dichteverteilung von Laserstrahlen (ISO 13694:2018)
Optique et photonique - Lasers et équipements associés aux lasers - Méthodes d'essai
de distribution de la densité de puissance (d'énergie) du faisceau laser (ISO
13694:2018)
Ta slovenski standard je istoveten z: EN ISO 13694:2018
ICS:
31.260 Optoelektronika, laserska Optoelectronics. Laser
oprema equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 13694
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2018
EUROPÄISCHE NORM
ICS 31.260 Supersedes EN ISO 13694:2015
English Version
Optics and photonics - Lasers and laser-related equipment
- Test methods for laser beam power (energy) density
distribution (ISO 13694:2018)
Optique et photonique - Lasers et équipements Optik und Photonik - Laser und Laseranlagen -
associés aux lasers - Méthodes d'essai de distribution Prüfverfahren für die Leistungs-(Energie-
de la densité de puissance (d'énergie) du faisceau laser )dichteverteilung von Laserstrahlen (ISO 13694:2018)
(ISO 13694:2018)
This European Standard was approved by CEN on 23 September 2018.

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 CEN-CENELEC Management Centre 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 CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 13694:2018 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 13694:2018) has been prepared by Technical Committee ISO/TC 172 "Optics
and photonics" in collaboration with Technical Committee CEN/TC 123 “Lasers and photonics” 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 June 2019, and conflicting national standards shall be
withdrawn at the latest by June 2019.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 13694:2015.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 13694:2018 has been approved by CEN as EN ISO 13694:2018 without any modification.

INTERNATIONAL ISO
STANDARD 13694
Third edition
2018-11
Optics and photonics — Lasers and
laser-related equipment — Test
methods for laser beam power
(energy) density distribution
Optique et photonique — Lasers et équipements associés aux
lasers — Méthodes d'essai de distribution de la densité de puissance
(d'énergie) du faisceau laser
Reference number
ISO 13694:2018(E)
©
ISO 2018
ISO 13694:2018(E)
© ISO 2018
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved

ISO 13694:2018(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
3.1 Measured quantities . 1
3.2 Characterizing parameters . 3
4 Coordinate system . 7
5 Characterizing parameters derived from the measured spatial distribution .7
6 Test principle . 7
7 Measurement arrangement and test equipment . 8
7.1 General . 8
7.2 Preparation . 8
7.3 Control of environment . 8
7.4 Detector system . 8
7.5 Beam-forming optics, optical attenuators, and beam splitters . 9
8 Test procedure . 9
8.1 Equipment preparation . 9
8.2 Detector calibration procedure .10
8.2.1 Spatial calibration .10
8.2.2 Power (energy) calibration .10
8.3 Data recording and noise correction .10
8.3.1 General.10
8.3.2 Correction by background-map subtraction .11
8.3.3 Correction by average background subtraction.11
9 Evaluation .12
10 Test report .12
Annex A (informative) Test report .13
Bibliography .16
ISO 13694:2018(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.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see www .iso
.org/iso/foreword .html.
This document was prepared by Technical Committee ISO/TC 172, Optics and photonics, Subcommittee
SC 9, Laser and electro-optical systems.
This third edition cancels and replaces the second edition (ISO 13694:2015), which has been technically
revised. The main changes compared to the previous edition are as follows:
a) the definition of beam ellipticity has been harmonized with ISO 11145 and ISO 11146-1;
b) the term “second linear moments” has been replaced by “second moments”;
c) the term “field of view” has been replaced by “aperture”;
d) Clause 9 was rewritten; the paragraphs on clip-levels were corrected to reflect that they are no
longer intended for noise cancelation;
e) the entries “Fitted distribution type”, “Roughness of fit R”, and “Goodness of fit G” have been
removed from
...