SIST EN ISO 24013:2007

SLOVENSKI STANDARD
SIST EN ISO 24013:2007
01-marec-2007
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Optics and photonics - Lasers and laser-related equipment - Measurement of phase
retardation of optical components for polarized laser radiation (ISO 24013:2006)
Optik und Photonik - Laser und Laseranlagen - Messung der Phasenverschiebung
optischer Komponenten für polarisierte Laserstrahlung (ISO 24013:2006)
Optique et photonique - Lasers et équipements associés aux lasers - Mesurage du
retard de phase des composants optiques pour le rayonnement laser polarisé (ISO
24013:2006)
Ta slovenski standard je istoveten z: EN ISO 24013:2006
ICS:
31.260 Optoelektronika, laserska Optoelectronics. Laser
oprema equipment
SIST EN ISO 24013:2007 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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EUROPEAN STANDARD
EN ISO 24013
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2006
ICS 31.260

English Version
Optics and photonics - Lasers and laser-related equipment -
Measurement of phase retardation of optical components for
polarized laser radiation (ISO 24013:2006)
Optique et photonique - Lasers et équipements associés Optik und Photonik - Laser und Laseranlagen - Messung
aux lasers - Mesurage du retard de phase des composants der Phasenverschiebung optischer Komponenten für
optiques pour le rayonnement laser polarisé (ISO polarisierte Laserstrahlung (ISO 24013:2006)
24013:2006)
This European Standard was approved by CEN on 14 November 2006.
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, Romania,
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
© 2006 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 24013:2006: E
worldwide for CEN national Members.

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EN ISO 24013:2006 (E)





Foreword


This document (prEN ISO 24013:2006) has been prepared by Technical Committee ISO/TC 172
"Optics and optical instruments" 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 May 2007, and conflicting national standards
shall be withdrawn at the latest by May 2007.

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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.


Endorsement notice

The text of ISO 24013:2006 has been approved by CEN as EN ISO 24013:2006 without any
modifications.

2

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INTERNATIONAL ISO
STANDARD 24013
First edition
2006-11-15

Optics and photonics — Lasers and
laser-related equipment — Measurement
of phase retardation of optical
components for polarized laser radiation
Optique et photonique — Lasers et équipements associés aux lasers —
Mesurage du retard de phase des composants optiques pour le
rayonnement laser polarisé




Reference number
ISO 24013:2006(E)
©
ISO 2006

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ISO 24013:2006(E)
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ii © ISO 2006 – All rights reserved

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ISO 24013:2006(E)
Contents Page
Foreword. iv
Introduction . v
1 Scope.1
2 Normative references.1
3 Terms and definitions .1
4 Symbols and abbreviated terms .1
5 Measurement principle.2
6 Preparation of test sample and measuring arrangement.3
6.1 General.3
6.2 Laser beam preparation .3
6.3 Sample adjustment and system calibration.3
6.4 Detection system .4
7 Test procedure.5
7.1 Test procedure for zero phase retardation .5
7.2 Test procedure for π/2 phase retardation.5
8 Evaluation.6
8.1 General.6
8.2 Evaluation for zero phase retardation .6
8.3 Evaluation for π/2 phase retardation.6
9 Test report.6
Annex A (informative) Theoretical background .8
Bibliography .15

© ISO 2006 – All rights reserved iii

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ISO 24013:2006(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 24013 was prepared by Technical Committee ISO/TC 172, Optics and photonics, Subcommittee SC 9,
Electro-optical systems.
iv © ISO 2006 – All rights reserved

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ISO 24013:2006(E)
Introduction
Normally it is desirable that the state of polarization be not influenced by the optical components used. For the
generation or maintenance of specific states of polarization the influence of optical components on the beam
polarization is crucial. For generating circularly polarized radiation from linearly polarized radiation π/2 phase
retarders are used.
This International Standard describes methods to determine the relative phase retardation of optical
components with respect to the x- and y-axes of the polarization and s- and p-polarization, respectively. This
International Standard is necessary for optics manufacturers, suppliers and customers of such optics for the
determination of the influence of phase retardation of optical components.
© ISO 2006 – All rights reserved v

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INTERNATIONAL STANDARD ISO 24013:2006(E)

Optics and photonics — Lasers and laser-related equipment —
Measurement of phase retardation of optical components for
polarized laser radiation
1 Scope
This International Standard specifies test methods for the determination of the optical phase retardation of
optical components by polarized laser beams.
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, Optics and photonics — Lasers and laser-related equipment — Vocabulary and symbols
ISO 12005, Lasers and laser-related equipment — Test methods for laser beam parameters — Polarization
ISO 14644-1:1999, Cleanrooms and associated controlled environments — Part 1: Classification of air
cleanliness
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 11145 and ISO 12005 apply.
4 Symbols and abbreviated terms
Symbols used and units of measure
Symbol Unit Term
ρ 1 degree of linear polarization
φ rad angle of analyser
a V/m amplitude of electric field in x-direction

1
a V/m amplitude of electric field in y-direction
2
a, b V/m principal axes of the vibrational ellipse
δ rad phase difference
∆δ rad phase retardation
E V/m electric field vector
α 1
absorptance in x-direction
x
α 1 absorptance in y-direction
y
ψ rad angle of the principle axis of the vibrational ellipse
© ISO 2006 – All rights reserved 1

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ISO 24013:2006(E)
5 Measurement principle
The optical component under test is irradiated by a laser beam with a defined state of polarization. After
passing the component the state of polarization of the beam is determined by using an analyser. The phase
retardation is then evaluated from the change of the state of polarization.
There are two cases to distinguish:
a) the expected phase retardation is near zero: in this case a circularly polarized beam shall be used for the
test;
b) the expected phase retardation is near π/2: in this case a linearly polarized beam shall be used for the
test.
Figure 1 shows the measuring set up.

a)  Optical path for reflective samples

b)  Optical path for transmissive samples
Key
1 laser
2 polarizer (linear or circular)
3 sample under test
4 analyser
5 detector
6 alignment laser
7 positional sensitive detector
Figure 1 — Schematic drawing of the measuring set up
2 © ISO 2006 – All rights reserved

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ISO 24013:2006(E)
A laser and a polarizer generating linearly or circularly polarized radiation shall be used in combination with an
analyser and a power detector. For measuring reflective samples an alignment laser in combination with a
positional sensitive detector ensures a reproducible angle alignment of the sample under test.
6 Preparation of test sample and measuring arrangement
6.1 General
Storage, cleaning and the preparation of the test samples are carried out in accordance with the
manufacturer's instructions for normal use.
The environment of the testing place consists of dust-free filtered air with less than 60 % relative humidity. The
residual dust is reduced in accordance with, for example, the clean-room ISO class 7 as defined in
ISO 14644-1:1999.
A linearly polarized laser shall be used as the radiation source. To keep errors as low as possible, the beam
power stability should be as high as possible.
Wavelength, angle of incidence and state of polarization of the laser radiation used for the measurement shall
correspond to the values specified by the manufacturer for the use of the test sample. If ranges are accepted
for these three quantities, any combination of wavelength, angle of incidence and state of polarization may be
chosen from these ranges.
6.2 Laser beam preparation
The accuracy of the measurement is strongly influenced by a clear definition of the state of polarization of the
laser beam. Therefore it is necessary to prepare the polarization state of the probe beam (linearly or circularly)
carefully.
If the expected phase retardation is near π/2, a linearly polarized beam shall be used. The quantity (1 − ρ),
−3
where ρ is the degree of linear polarization, shall be less than 10 . This shall be verified by using the
analyser without the sample in the beam path.
NOTE 1 Such a state of polarization can be achieved by using a linearly polarized laser beam in combination with
additional polarizing elements.
If the expected phase retardation is near zero, a circularly polarized beam shall be used. The degree of linear
−3
polarization ρ shall be less than 10 . This shall be verified by using the analyser without the sample in the
beam path.
NOTE 2 Such a state of polarization can be achieved by using a linearly polarized laser beam in combination with
additional linearly polarizing elements and a π/2 phase retarding element.
All optical elements shall not increase the quantity (1 − ρ) in the case of a linearly polarized beam and ρ in the
−3
case of a circularly polarized beam, by more than 10 . For this reason the use of folding mirrors in the test
setup is discouraged and all other optical elements shall be used under normal incidence.
6.3 Sample a
...