EN ISO 11151-2:2000

SLOVENSKI STANDARD
01-november-2000
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Lasers and laser-related equipment - Standard optical components - Part 2: Components
for the infrared spectral range (ISO 11151-2:2000)
Laser und Laseranlagen - Optische Standardkomponenten - Teil 2: Komponenten für
den infraroten Spektralbereich (ISO 11151-2:2000)
Lasers et équipements associés aux lasers - Composants optiques standards - Partie 2:
Composants pour la plage spectrale infrarouge (ISO 11151-2:2000)
Ta slovenski standard je istoveten z: EN ISO 11151-2:2000
ICS:
31.260 Optoelektronika, laserska Optoelectronics. Laser
oprema equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

INTERNATIONAL ISO
STANDARD 11151-2
First edition
2000-06-15
Lasers and laser-related equipment —
Standard optical components —
Part 2:
Components for the infrared spectral range
Lasers et équipements associés aux lasers — Composants optiques
standards —
Partie 2: Composants pour la plage spectrale infrarouge
Reference number
ISO 11151-2:2000(E)
©
ISO 2000
ISO 11151-2:2000(E)
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ii © ISO 2000 – All rights reserved

ISO 11151-2:2000(E)
Contents Page
Foreword.iv
Introduction.v
1 Scope .1
2 Normative references .1
3 Code for components covered.2
4 Materials .2
5 Requirements for quality .2
6 Dimensional tolerances .5
6.1 Preferred dimensions.5
6.2 Diameter of circular optical components.5
6.3 Mirror and output coupler curvature .5
6.4 Rectangular and elliptical windows.5
6.5 Focal length.5
6.6 Thickness .6
7 Testing area.6
8 Designation for ordering.6
9 Coating.7
10 Packaging.8
Annex A (informative) Imperial units.9
Annex B (informative) Configuration for relieving stress in copper mirrors .10
Bibliography.12
ISO 11151-2:2000(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 3.
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 part of ISO 11151 may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights.
International Standard ISO 11151-2 was prepared by Technical Committee ISO/TC 172, Optics and optical
instruments, Subcommittee SC 9, Electro-optical systems.
ISO 11151 consists of the following parts, under the general title Lasers and laser-related equipment — Standard
optical components:
� Part 1: Components for UV, visible and near-infrared spectral ranges
� Part 2: Components for the infrared spectral range
Annexes A and B of this part of ISO 11151 are for information only.
iv © ISO 2000 – All rights reserved

ISO 11151-2:2000(E)
Introduction
Lasers are used in a wide variety of applications, including medicine, materials processing, information technology
and metrology. Most lasers contain optical windows and mirrors (intracavity) and most laser systems use a variety
of windows, beamsplitters, deflectors, mirrors and lenses. Those components used in high power laser applications
must withstand high peak power and/or energy densities to avoid laser-induced damage, thus their component
specifications are more demanding than those used in low power applications.
INTERNATIONAL STANDARD ISO 11151-2:2000(E)
Lasers and laser-related equipment — Standard optical
components —
Part 2:
Components for the infrared spectral range
1 Scope
This part of ISO 11151 specifies requirements for laser components used in the infrared spectral range, from
wavelengths 2,10µm to 15,0µm, and facilitates the supply of spare parts:
� by specifying preferred dimensions and tolerances, thereby reducing the variety of types;
� by standardizing the specifications and removing barriers to trade;
� by establishing an agreed designation for item orders.
This part of ISO 11151 covers planar, plano-spherical and spherical substrates, lenses and optical components that
are designed specifically as standardized optical components normally offered via catalogue from suppliers and
intended for use with lasers.
This part of ISO 11151 includes component descriptions, materials employed, physical dimensions and
manufacturing tolerances (including surface finish, figure and parallelism). Although most, but not all of these
components will be coated (fully reflecting, partially reflecting or anti-reflecting) before incorporation into the laser
system, this part of ISO 11151 does not include recommendations for the specification of coatings.
NOTE For optical components used in the ultra-violet, visible and near infrared spectral ranges (190 nm to 2 100 nm), refer
to ISO 11151-1. For the specification and testing of optical coatings, refer to the ISO 9211 series.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of
this part of ISO 11151. For dated references, subsequent amendments to, or revisions of, any of these publications
do not apply. However, parties to agreements based on this part of ISO 11151 are encouraged to investigate the
possibility of applying the most recent editions of the normative documents indicated below. For undated
references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain
registers of currently valid International Standards.
ISO 9211-1:1994, Optics and optical instruments — Optical coatings — Part 1: Definitions.
ISO 9211-2:1994, Optics and optical instruments — Optical coatings — Part 2: Optical properties.
ISO 10110-1:1996, Optics and optical instruments — Preparation of drawings for optical elements and systems —
Part 1: General.
ISO 11151-2:2000(E)
3 Code for components covered
Table 1 specifies codes for the components to which this part of ISO 11151 is applicable.
Table 1 — Component codes
Component form Code
Optical flats IOF
Circular windows — flat IWC
Elliptical windows — flat IWE
Rectangular windows — flat IWR
Output couplers — flat IOC
Mirrors — flat IMF
Mirrors — convex IMX
Mirrors — concave IMV
Plano-convex lenses IPX
Plano-concave lenses IPV
Symmetric biconvex lenses IBX
Symmetric biconcave lenses IBV
4 Materials
This part of ISO 11151 covers components employed in the infrared wavelength region from 2,10µm to 15µm. A
wide range of materials may be used, such as:
� zinc selenide, ZnSe;
� potassium chloride, KCl;
� germanium, Ge;
� gallium arsenide, GaAs;
� silicon, Si;
� copper, Cu.
In view of the wide variety of materials available, the use of specific code numbers for each material has not been
formalized. Manufacturers and designers shall therefore specifiy the exact materials used/required. The material
specification shall be given as stated in subclause 4.7 of ISO 10110-1:1996. If birefringent materials are
used/specified, the orientation of the optical axis relative to the geometric axes of the components shall be stated.
5 Requirements for quality
Preferred specifications and classes for material and surface quality are set out in Tables 2 to 6, using terminology
in accordance with parts 1 to 7 of ISO 10110. The same quality standards apply to all components of a given
diameter, except that the material tolerances are inapplicable in the case of total reflector substrates.
2 © ISO 2000 – All rights reserved

ISO 11151-2:2000(E)
The requirement of quality for components to be used with infrared lasers is in general high, therefore this part of
1�
ISO 11151 only promulgates one class of quality .
For this reason there is no difference between a flat circular window, IWC, specification and an output coupler, IOC,
specification in this waveband. It should be noted that the surface dig and pit critical dimensions for laser-induced
damage are� /10 to 10�,where� is the wavelength of operation of the laser.
Table 2 — Material and surface fabrication tolerances for lenses, windows and beamsplitters
Diameter Stress Bubbles and Inhomogeneity Surface Centring Surface
birefringence inclusions and striae form imperfection
mm 0/. 1/. 2/. 3/. 4/. 5/.
5to 15 15 0;2 –(0,4/0,4) 3
3� 0,063 � 2� 0,025
15 0;2 –(0,6/0,6) 3�
�15 to 30 4� 0,063 3� 0,040
15 0;2 –(1,0/1,0) 3�
�30 to 51 4� 0,100 4� 0,063
15 0;2 –(1,0/1,0) 3�
�51 to 102 5� 0,100 5� 0,100
Table 3 — Material and surface fabrication tolerances for total reflector substrates
Diameter Stress Bubbles and Inhomogeneity Surface Centring Surface
birefringence inclusions and striae form imperfection
mm 0/. 1/. 2/. 3/. 4/. 5/.
5to 15 NA NA NA –(0,4/0,4) 5� 2 � 0,025
�15 to 30 NA NA NA –(0,6/0,6) 5� 3 � 0,040
�30 to 51 NA NA NA –(1,0/1,0) 5� 4 � 0,063
�51 to 102 NA NA NA –(1,0/1,0) 5� 5 � 0,100
NA: not applicable.
1�
The quoted grade values assume that most of the incident radiation
...