EN ISO 12005:2003

SLOVENSKI STANDARD
01-september-2003
1DGRPHãþD
SIST EN ISO 12005:2000
Laserji in laserska oprema – Preskusne metode za parametre laserskega žarka –
Polarizacija (ISO 12005:2003)
Lasers and laser-related equipment - Test methods for laser beam parameters -
Polarization (ISO 12005:2003)
Laser und Laseranlagen - Prüfverfahren für Laserstrahlparameter - Polarisation (ISO
12005:2003)
Lasers et équipements associés aux lasers - Méthodes d'essai des parametres du
faisceau laser - Polarisation (ISO 12005:2003)
Ta slovenski standard je istoveten z: EN ISO 12005:2003
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 12005
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2003
ICS 31.260 Supersedes EN ISO 12005:1999
English version
Lasers and laser-related equipment - Test methods for laser
beam parameters - Polarization (ISO 12005:2003)
Lasers et équipements associés aux lasers - Méthodes Laser und Laseranlagen - Prüfverfahren für
d'essai des paramètres du faisceau laser - Polarisation Laserstrahlparameter - Polarisation (ISO 12005:2003)
(ISO 12005:2003)
This European Standard was approved by CEN on 21 February 2003.
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 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 Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United
Kingdom.
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© 2003 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 12005:2003 E
worldwide for CEN national Members.

CORRECTED  2003-07-02
Foreword
This document (EN ISO 12005:2003) 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 October 2003, and conflicting national
standards shall be withdrawn at the latest by October 2003.
This document supersedes EN ISO 12005:1999.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of
the following countries are bound to implement this European Standard: Austria, Belgium, Czech
Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and
the United Kingdom.
Endorsement notice
The text of ISO 12005:2003 has been approved by CEN as EN ISO 12005:2003 without any
modifications.
NOTE Normative references to International Standards are listed in Annex ZA (normative).
Annex ZA
(normative)
Normative references to international publications
with their relevant European publications
This European Standard incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions of
any of these publications apply to this European Standard only when incorporated in it by
amendment or revision. For undated references the latest edition of the publication referred to
applies (including amendments).
NOTE Where an International Publication has been modified by common modifications, indicated
by (mod.), the relevant EN/HD applies.
Publication Year Title EN Year
ISO 11145 2001 Optics and optical instruments - Lasers EN ISO 11145 2001
and laser-related equipment -
Vocabulary and symbols
INTERNATIONAL ISO
STANDARD 12005
Second edition
2003-04-01
Lasers and laser-related equipment —
Test methods for laser beam
parameters — Polarization
Lasers et équipements associés aux lasers — Méthodes d'essai des
paramètres du faisceau laser — Polarisation

Reference number
ISO 12005:2003(E)
©
ISO 2003
ISO 12005:2003(E)
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ii ISO 2003 – All rights reserved

ISO 12005:2003(E)
Contents Page
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Test method for state of polarization . 3
4.1 Principle of measurement . 3
4.2 Equipment arrangement . 3
4.3 Components . 4
4.4 Test procedure . 5
4.5 Analysis of the results . 6
5 Test report . 7
Annex A (informative) Complete description of the polarization status of a monochromatic
laser beam . 9
Bibliography . 11
©
ISO 2003 – All rights reserved iii

ISO 12005:2003(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.
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.
ISO 12005 was prepared by Technical Committee ISO/TC 172, Optics and optical instruments, Subcommittee
SC 9, Electro-optical systems.
This second edition cancels and replaces the first edition (ISO 12005:1999), which has been technically
revised.
©
iv ISO 2003 – All rights reserved

ISO 12005:2003(E)
Introduction
This International Standard specifies a relatively quick and simple method, requiring minimum equipment, for
determining the state of polarization of a laser beam.
This method is for well-polarized laser beams, including those emitted by lasers with a high divergence angle.
However, if more completeness in the determination of the polarization status is required, the use of a more
sophisticated analysing device is necessary. Although not within the scope of this International Standard, the
principle of operation of such devices is given in Annex A, together with a description of the Stokes parameters
which are needed in that case.
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ISO 2003 – All rights reserved v

.
vi
INTERNATIONAL STANDARD ISO 12005:2003(E)
Lasers and laser-related equipment — Test methods for laser
beam parameters — Polarization
1Scope
This International Standard specifies a method for determining the polarization status and, whenever possible,
the degree of polarization of the beam from a continuous wave (cw) laser. It can also be applied to repetitively
pulsed lasers, if their electric field vector orientation does not change from pulse to pulse.
This International Standard also specifies the method for determining the direction of the plane of oscillation in
the case of linearly polarized (totally or partially) laser beams. It is assumed that the laser radiation is quasi-
monochromatic and sufficiently stable for the purpose of the measurement.
The knowledge of the polarization status can be very important for some applications of lasers with a high
divergence angle, for instance when the beam of such a laser shall be coupled with polarization dependent
devices (e.g. polarization maintaining fibres). This International Standard also specifies a method for the
determination of the state of polarization of highly divergent laser beams, as well as for the measurement of
beams with large apertures.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced document
(including any amendments) applies.
ISO 11145:2001, Optics and optical instruments — Lasers and laser-related equipment — Vocabulary and
symbols
IEC 61040:1990, Power and energy measuring detectors, instruments and equipment for laser radiation
CIE 59-1984, Definitions and Nomenclature, Instrument Polarization
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 11145:2001, IEC 61040:1990,
CIE 59-1984 and the following apply.
3.1
polarization
restriction of oscillations of the electric field vector to certain directions
NOTE This is a fundamental phenomenon which can be explained by the concept that electromagnetic radiation is a
transverse wave motion, i. e. the vibrations are at right angles to the direction of propagation. It is customary to consider
these vibrations as being those of the electric field vector.
3.2
state of polarization
classification of polarization as linear, random, circular, elliptical or unpolarized
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ISO 2003 – All rights reserved 1

ISO 12005:2003(E)
3.3
direction of polarization
direction of the electric field vector of an electromagnetic wave
3.4
plane of polarization
plane containing the electric field vector and the direction of propagation of the electromagnetic radiation
3.5
ellipticity
b/a
〈elliptically polarized radiation〉 ratio of the minor semiaxis ba of the ellipse to the major semiaxis of the ellipse
NOTE The ellipse is described by the motion of the terminal point of the electric field vector in a transverse plane to the
direction of radiation propagation (see Annex A).
3.6
ellipticity angle
�
angle whose tangent is the ellipticity
◦ ◦ ◦
NOTE The ellipticity angle is constrained to −45 � ��+ 45 . When �=± 45 the polarization is circula
...