EN ISO 11554 2025.docx

ENISO11554EuropeanstandardNormeeuropeenneJune2025EuropaischenormICS31.260SupersedesENISO11554:2017EnglishVersionOpticsandphotonics-Lasersandlaser-relatedequipment-Testmethodsforlaserbeamradiantpower,radiantenergyandtemporalcharacteristicsISO11554:2025Optiqueetphotonique-Lasersetequipementsassociesauxlasers-Methodesd'essaidelapuissancerayonnante,deFenergierayonnanteetdesCaracteristiquestemporellesdesfaisceauxlasers(ISO11554:2025)OptikundPhotonik-LaserundLaseranlagen-PriifverfahrenfiirLeistung,EnergieundKenngroEendesZeitverhaltensvonLaserstrahlen(ISO11554:2025)ThisEuropeanStandardwasapprovedbyCENon13November2023.CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEuropeanStandardthestatusofanationalstandardwithoutanyalteration.Up-to-datelistsandbibliographicalreferencesconcerningsuchnationalstandardsmaybeobtainedonapplicationtotheCEN-CENELECManagementCentreortoanyCENmember.ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).AversioninanyotherlanguagemadebytranslationundertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheCEN-CENELECManagementCentrehasthesamestatusastheofficialversions.CENmembersarethenationalstandardsbodiesofAustria,Belgium,Bulgaria,Croatia,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal,RepublicofNorthMacedonia,Romania,Serbia,Slovakia,Slovenia,Spain,Sweden,Switzerland,TiirkiyeandUnitedKingdom.EUROPEANCOMMITTEEFORSTANDARDIZATIONCOMITEEUROPEENDENORMALISATIONEuropaischeskomiteefurnormungCEN-CENELECManagementCentre:RuedelaScience23,B-1040BrusselsRef.No.ENISO11554:2025E©2025CENAllrightsofexploitationinanyformandbyanymeansreservedworldwideforCENnationalMembers.ContentsPageEuropeanforeword3EuropeanforewordThisdocument(ENISO11554:2025)hasbeenpreparedbyTechnicalCommitteeISO/TC172"Opticsandphotonics"incollaborationwithTechnicalCommitteeCEN/TC123nLasersandphotonicsnthesecretariatofwhichisheldbyDIN.ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltextorbyendorsement,atthelatestbyDecember2025,andconflictingnationalstandardsshallbewithdrawnatthelatestbyDecember2025.Attentionisdrawntothepossibilitythatsomeoftheelementsofthisdocumentmaybethesubjectofpatentrights.CENshallnotbeheldresponsibleforidentifyinganyorallsuchpatentrights.ThisdocumentsupersedesENISO11554:2017.ThisdocumenthasbeenpreparedunderastandardizationrequestaddressedtoCENbytheEuropeanCommission.TheStandingCommitteeoftheEFTAStatessubsequentlyapprovestheserequestsforitsMemberStates.Anyfeedbackandquestionsonthisdocumentshouldbedirectedtotheusers'nationalstandardsbody/nationalcommittee.AcompletelistingofthesebodiescanbefoundontheCENwebsite.AccordingtotheCEN-CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowingcountriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,Bulgaria,Croatia,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal,RepublicofNorthMacedonia,Romania,Serbia,Slovakia,Slovenia,Spain,Sweden,Switzerland,TiirkiyeandtheUnitedKingdom.EndorsementnoticeThetextofISO11554:2025hasbeenapprovedbyCENasENISO11554:2025withoutanymodification.InternationalStandardISO11554Fifthedition2025-06OpticsandphotonicsLasersandlaser-relatedequipmentTestmethodsforlaserbeamradiantpower,radiantenergyandtemporalcharacteristicsOptiqueetphotoniqueLasersetequipementsassociesauxlasersMethodesd'essaidelapuissancerayonnantefdeenergierayonnanteetdesCaracteristiquestemporellesdesfaisceauxlasersReferencenumberISO11554:2025(en)COPYRIGHTPROTECTEDDOCUMENT©ISO2025Allrightsreserved.Unlessotherwisespecified,orrequiredinthecontextofitsimplementation,nopartofthispublicationmaybereproducedorutilizedotherwiseinanyformorbyanymeans,electronicormechanical,includingphotocopying,orpostingontheinternetoranintranet,withoutpriorwrittenpermission.PermissioncanberequestedfromeitherISOattheaddressbeloworISO,smemberbodyinthecountryoftherequester.ISOcopyrightofficeCP401Ch.deBlandonnet8CH-1214Vernier,GenevaPhone:+41227490111Email:copyrightiso.orgWebsite:www.iso.orgPublishedinSwitzerlandPageContentsForewordivIntroductionvi2 Normativereferences13 Termsanddefinitions14 Symbolsandunitsofmeasurement25 Measurementprinciples36 Measurementconfiguration,testequipmentandauxiliarydevices36.1 Preparation36.1.1 Sourceswithsmalldivergenceangles36.1.2 Sourceswithlargedivergenceangles36.1.3 RINmeasurement46.1.4 Measurementofsmallsignalcutofffrequency56.2 Controlofenvironmentalimpacts66.3 Detectors66.4 Beam-formingoptics76.5 Opticalattenuators7MeasurementsO234567891z7.z7.zz7.7.7.RadiantpowerofcwlasersRadiantpowerstabilityofcwlasersR