BS-EN-ISO-11151-2-2000.pdf

| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN ISO 11151-2:2000 The European Standard EN ISO 11151-2:2000 has the status of a British Standard ICS 31.260 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Lasers and laser-related equipment Ð Standard optical components Ð Part 2: Components for the infrared spectral range Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 12:48:48 GMT+00:00 2006, Uncontrolled Copy, (c) BSI This British Standard, having been prepared under the direction of the Electrotechnical Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 October 2000 BSI 10-1999 ISBN 0 580 36569 7 BS EN ISO 11151-2:2000 Amendments issued since publication Amd. No.DateComments National foreword This British Standard is the official English language version of EN ISO 11151-2:2000. It is identical with ISO 11151-2:2000. The UK participation in its preparation was entrusted to Technical Committee EPL/76, Optical radiation safety and laser equipment, which has the responsibility to: Ð aid enquirers to understand the text; Ð present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; Ð monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references Attention is drawn to the fact that CEN and CENELEC Standards normally include an annex which lists normative references to international publications with their corresponding European publications. The British Standards which implement these international or European publications may be found in the BSI Standards Catalogue under the section entitled ªInternational Standards Correspondence Indexº, or by using the ªFindº facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN ISO title page, the EN ISO foreword page, the ISO title page, pages ii to v, a blank page, pages 1 to 12, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 12:48:48 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM EN ISO 11151-2 June 2000 ICS 31.260 English version Lasers and laser-related equipment - Standard optical components - Part 2: Components for the infrared spectral range (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) Laser und Laseranlagen - Optische Standardkomponenten - Teil 2: Komponenten für den infraroten Spektralbereich (ISO 11151-2:2000) This European Standard was approved by CEN on 15 June 2000. 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, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG Central Secretariat: rue de Stassart, 36 B-1050 Brussels © 2000 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 11151-2:2000 E Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 12:48:48 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Foreword The text of the International Standard ISO 11151-2:2000 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 December 2000, and conflicting national standards shall be withdrawn at the latest by December 2000. 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, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of the International Standard ISO 11151-2:2000 was approved by CEN as a European Standard without any modification. EN ISO 11151-2:2000 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 12:48:48 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Reference number ISO 11151-2:2000(E) INTERNATIONAL STANDARD ISO 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 EN ISO 11151-2:2000 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 12:48:48 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii EN ISO 11151-2:2000 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 12:48:48 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iii Contents Page Foreword.iv Introduction.v 1 Scope 1 2 Normative references1 3 Code for components covered.2 4 Materials .2 5 Requirements for quality 2 6 Dimensional tolerances 5 6.1 Preferred dimensions5 6.2 Diameter of circular optical components5 6.3 Mirror and output coupler curvature .5 6.4 Rectangular and elliptical windows.5 6.5 Focal length5 6.6 Thickness .6 7 Testing area6 8 Designation for ordering.6 9 Coating7 10 Packaging.8 Annex A (informative) Imperial units.9 Annex B (informative) Configuration for relieving stress in copper mirrors10 Bibliography12 EN ISO 11151-2:2000 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 12:48:48 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iv 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. EN ISO 11151-2:2000 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 12:48:48 GMT+00:00 2006, Uncontrolled Copy, (c) BSI v 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. EN ISO 11151-2:2000 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 12:48:48 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 11151-2:2000 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 12:48:48 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 1 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 2,10 µm to 15,0 µm, 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. EN ISO 11151-2:2000 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 12:48:48 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 2 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 Circular windows flat Elliptical windows flat Rectangular windows flat Output couplers flat Mirrors flat Mirrors convex Mirrors concave Plano-convex lenses Plano-concave lenses Symmetric biconvex lenses Symmetric biconcave lenses IOF IWC IWE IWR IOC IMF IMX IMV IPX IPV IBX IBV 4 Materials This part of ISO 11151 covers components employed in the infrared wavelength region from 2,10 µm to 15 µm. 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. EN ISO 11151-2:2000 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 12:48:48 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 3 The requirement of quality for components to be used with infrared lasers is in general high, therefore this part of ISO 11151 only promulgates one class of quality1?. 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 mm Stress birefringence 0/. Bubbles and inclusions 1/. Inhomogeneity and striae 2/. Surface form 3/. Centring 4/. Surface imperfection 5/. 5 to 15 15 3 ? 0,063 0;2 (0,4/0,4) ?3 2 ?0,025 ?15 to 30 15 4?0,063 0;2 (0,6/0,6) ?3 3?0,040 ?30 to 51 15 4?0,100 0;2 (1,0/1,0) ?3 4?0,063 ?51 to 102 15 5?0,100 0;2 (1,0/1,0) ?3 5?0,100 Table 3 Material and surface fabr