1、ENISO11554EuropeanstandardNormeeuropeenneJune2025EuropaischenormICS31.260SupersedesENISO11554:2017EnglishVersionOpticsandphotonics-Lasersandlaser-relatedequipment-Testmethodsforlaserbeamradiantpower,radiantenergyandtemporalcharacteristicsISO11554:2025Optiqueetphotonique-Lasersetequipementsassociesau
2、xlasers-Methodesdessaidelapuissancerayonnante,deFenergierayonnanteetdesCaracteristiquestemporellesdesfaisceauxlasers(ISO11554:2025)OptikundPhotonik-LaserundLaseranlagen-PriifverfahrenfiirLeistung,EnergieundKenngroEendesZeitverhaltensvonLaserstrahlen(ISO11554:2025)ThisEuropeanStandardwasapprovedbyCEN
3、on13November2023.CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEuropeanStandardthestatusofanationalstandardwithoutanyalteration.Up-to-datelistsandbibliographicalreferencesconcerningsuchnationalstandardsmaybeobtainedonapplicationtotheCEN-CENELE
4、CManagementCentreortoanyCENmember.ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).AversioninanyotherlanguagemadebytranslationundertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheCEN-CENELECManagementCentrehasthesamestatusastheofficialversions.CENmembersarethen
5、ationalstandardsbodiesofAustria,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,Switze
6、rland,TiirkiyeandUnitedKingdom.EUROPEANCOMMITTEEFORSTANDARDIZATIONCOMITEEUROPEENDENORMALISATIONEuropaischeskomiteefurnormungCEN-CENELECManagementCentre:RuedelaScience23,B-1040BrusselsRef.No.ENISO11554:2025E2025CENAllrightsofexploitationinanyformandbyanymeansreservedworldwideforCENnationalMembers.Con
7、tentsPageEuropeanforeword3EuropeanforewordThisdocument(ENISO11554:2025)hasbeenpreparedbyTechnicalCommitteeISO/TC172OpticsandphotonicsincollaborationwithTechnicalCommitteeCEN/TC123nLasersandphotonicsnthesecretariatofwhichisheldbyDIN.ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherb
8、ypublicationofanidenticaltextorbyendorsement,atthelatestbyDecember2025,andconflictingnationalstandardsshallbewithdrawnatthelatestbyDecember2025.Attentionisdrawntothepossibilitythatsomeoftheelementsofthisdocumentmaybethesubjectofpatentrights.CENshallnotbeheldresponsibleforidentifyinganyorallsuchpaten
9、trights.ThisdocumentsupersedesENISO11554:2017.ThisdocumenthasbeenpreparedunderastandardizationrequestaddressedtoCENbytheEuropeanCommission.TheStandingCommitteeoftheEFTAStatessubsequentlyapprovestheserequestsforitsMemberStates.Anyfeedbackandquestionsonthisdocumentshouldbedirectedtotheusersnationalsta
10、ndardsbody/nationalcommittee.AcompletelistingofthesebodiescanbefoundontheCENwebsite.AccordingtotheCEN-CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowingcountriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,Bulgaria,Croatia,Cyprus,CzechRepublic,Denmark,Estonia,Finla
11、nd,France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal,RepublicofNorthMacedonia,Romania,Serbia,Slovakia,Slovenia,Spain,Sweden,Switzerland,TiirkiyeandtheUnitedKingdom.EndorsementnoticeThetextofISO11554:2025hasbeenapprovedbyCENasENIS
12、O11554:2025withoutanymodification.InternationalStandardISO11554Fifthedition2025-06OpticsandphotonicsLasersandlaser-relatedequipmentTestmethodsforlaserbeamradiantpower,radiantenergyandtemporalcharacteristicsOptiqueetphotoniqueLasersetequipementsassociesauxlasersMethodesdessaidelapuissancerayonnantefd
13、eenergierayonnanteetdesCaracteristiquestemporellesdesfaisceauxlasersReferencenumberISO11554:2025(en)COPYRIGHTPROTECTEDDOCUMENTISO2025Allrightsreserved.Unlessotherwisespecified,orrequiredinthecontextofitsimplementation,nopartofthispublicationmaybereproducedorutilizedotherwiseinanyformorbyanymeans,ele
14、ctronicormechanical,includingphotocopying,orpostingontheinternetoranintranet,withoutpriorwrittenpermission.PermissioncanberequestedfromeitherISOattheaddressbeloworISO,smemberbodyinthecountryoftherequester.ISOcopyrightofficeCP401Ch.deBlandonnet8CH-1214Vernier,GenevaPhone:+41227490111Email:copyrightis
15、o.orgWebsite:www.iso.orgPublishedinSwitzerlandPageContentsForewordivIntroductionvi2 Normativereferences13 Termsanddefinitions14 Symbolsandunitsofmeasurement25 Measurementprinciples36 Measurementconfiguration,testequipmentandauxiliarydevices36.1 Preparation36.1.1 Sourceswithsmalldivergenceangles36.1.
16、2 Sourceswithlargedivergenceangles36.1.3 RINmeasurement46.1.4 Measurementofsmallsignalcutofffrequency56.2 Controlofenvironmentalimpacts66.3 Detectors66.4 Beam-formingoptics76.5 Opticalattenuators7MeasurementsO234567891z7.z7.zz7.7.7.RadiantpowerofcwlasersRadiantpowerstabilityofcwlasersRadiantpulseene
17、rgyofpulsedlasersRadiantenergystabilityofpulsedlasersTemporalradiantpulseshape,radiantpulseduration,radiantpowerRadiantpulsedurationstabilityRadiantpulserepetitionrateRelativeintensitynoise,RINSmallsignalcut-offfrequencyrisetime,falltimeandpeak88,91234568888888.78.88.98.109Testreport13EvaluationGene
18、ral9Radiantpowerofcwlasers10Radiantpowerstabilityofcwlasers10Radiantpulseenergyofpulsedlasers10Radiantenergystabilityofpulsedlasers11Temporalradiantpulseshape,radiantpulseduration,risetime,falltimeandpeakradiantpower11Radiantpulsedurationstability13Radiantpulserepetitionrate13Relativeintensitynoise,
19、RIN13Smallsignalcut-offfrequency13AnnexA(informative)Relativeintensitynoise(RIN)17Bibliography19ForewordISO(theInternationalOrganizationforStandardization)isaworldwidefederationofnationalstandardsbodies(ISOmemberbodies).TheworkofpreparingInternationalStandardsisnormallycarriedoutthroughISOtechnicalc
20、ommittees.Eachmemberbodyinterestedinasubjectforwhichatechnicalcommitteehasbeenestablishedhastherighttoberepresentedonthatcommittee.Internationalorganizations,governmentalandnon-governmental,inliaisonwithISO,alsotakepartinthework.ISOcollaboratescloselywiththeInternationalElectrotechnicalCommission(IE
21、C)onallmattersofelectrotechnicalstandardization.TheproceduresusedtodevelopthisdocumentandthoseintendedforitsfurthermaintenancearedescribedintheISO/IECDirectives,Part1.Inparticular,thedifferentapprovalcriterianeededforthedifferenttypesofISOdocumentshouldbenoted.Thisdocumentwasdraftedinaccordancewitht
22、heeditorialrulesoftheISO/IECDirectives,Part2(Seewww.iso.org/directives).ISOdrawsattentiontothepossibilitythattheimplementationofthisdocumentmayinvolvetheuseof（八）patent(三).ISOtakesnopositionconcerningtheevidence,validityorapplicabilityofanyclaimedpatentrightsinrespectthereof.Asofthedateofpublicationo
23、fthisdocument,ISOhadnotreceivednoticeof（八）patent(三)whichmayberequiredtoimplementthisdocument.However,implementersarecautionedthatthismaynotrepresentthelatestinformation,whichmaybeobtainedfromthepatentdatabaseavailableatWWW.iso.org/patents.ISOshallnotbeheldresponsibleforidentifyinganyorallsuchpatentr
24、ights.Anytradenameusedinthisdocumentisinformationgivenfortheconvenienceofusersanddoesnotconstituteanendorsement.Foranexplanationofthevoluntarynatureofstandards,themeaningofISOspecifictermsandexpressionsrelatedtoconformityassessment,aswellasinformationaboutISOsadherencetotheWorldTradeOrganization(WTO
25、)principlesintheTechnicalBarrierstoTrade(TBT),SeeWWW.iso.org/iso/foreword.htmLThisdocumentwaspreparedbyTechnicalCommitteeISO/TC172,Opticsandphotonics,SubcommitteeSC9,Laserandelectro-opticalsystems,incollaborationwiththeEuropeanCommitteeforStandardization(CEN)TechnicalCommitteeCEN/TC123,Lasersandphot
26、onics,inaccordancewiththeAgreementontechnicalcooperationbetweenISOandCEN(ViennaAgreement).Thisfiftheditioncancelsandreplacesthefourthedition(ISO11554:2017)whichhasbeentechnicallyrevised.Themainchangesareasfollows:a) Wholedocument:Theterm“powerandenergythatmeanopticalpowerandopticalenergyhavebeenrepl
27、acedby11radiantpowerand11radiantenergy,respectively,andtheword11spectraldensity11hasbeenreplacedby“spectral“inordertoalignwithISO80000-7:2019andtheInternationalElectrotechnicalVocabulary.b) Normativereferences:IEC61040:1990hasbeenremovedbecauseitwaswithdrawninAugust2011.c) In3.1lthedefinitionofRINha
28、sbeencorrected.Thewordrelativeintensitynoisespectraldensity11hasbeenreplacedby11spectralrelativeintensitynoise.d) InFigUre2,keys4,5and6havebeenamended.e) In613,theexplanatorytexthasbeenaddedinsteadofreferencingIEC61040:1990.f) In6.5,Theterm“laserpowerdensity11hasbeenreplacedby“irradianceinordertoali
29、gnwithISO80000-7:2019.g) In79measurementprocedurehasbeenmodifiedtoclarifythemethodforremovingthermalandshotnoisetermsaswellaspre-amplifiernoisefromthemeasurednoisepower.h) InClaUSe9c)5),thetermscurrentorenergyinput,pulseenergy,pulseduration,1and11pulserepetitionratehavebeenmodifiedinordertoclarifyth
30、eircharacteristics.i) InAnnexA,theword11spectraldensityofthepowerHuctuationsnand11spectraldensityfunctionS尸S”havebeenreplacedby11spectralirradiationfluctuationsandpowerspectrumS尸respectively.Anyfeedbackorquestionsonthisdocumentshouldbedirectedtotheusersnationalstandardsbody.Acompletelistingofthesebo
31、diescanbefoundatWWW.iso.org/members.htmLIntroductionThemeasurementoflaserradiantpower(radiantenergyforpulsedlasers)isacommontypeofmeasurementperformedbylasermanufacturersandusers.Radiantpower(radiantenergy)measurementsareneededforlasersafetyclassification,stabilityspecifications,maximumlaseroutputsp
32、ecifications,damageavoidance,specificapplicationrequirements,etc.Thisdocumentprovidesguidanceonperforminglaserradiantpower(radiantenergy)measurementsasappliedtostabilitycharacterization.Thestabilitycriteriaaredescribedforvarioustemporalregions(e.g.short-term,mediumtermandlongterm)andprovidemethodsto
33、quantifythesespecifications.Thisdocumentalsocoverspulsemeasurementswheredetectorresponsespeedcanbecriticallyimportantwhenanalysingpulseshapeorpeakradiantpowerofshortpulses.Tostandardizereportingofradiantpower(radiantenergy)measurementresults,areporttemplateisalsoincluded.OpticsandphotonicsLasersandl
34、aser-relatedequipmentTestmethodsforlaserbeamradiantpower,radiantenergyandtemporalcharacteristics1 ScopeThisdocumentspecifiestestmethodsfordeterminingtheradiantpowerandradiantenergyofcontinuouswaveandpulsedlaserbeams,aswellastheirtemporalcharacteristicsofpulseshape,pulsedurationandpulserepetitionrate
35、Testandevaluationmethodsarealsogivenfortheradiantpowerstabilityofcw-lasers,radiantenergystabilityofpulsedlasersandpulsedurationstability.Thetestmethodsgiveninthisdocumentareusedforthetestingandcharacterizationoflasers.2 NormativereferencesThefollowingdocumentsarereferredtointhetextinsuchawaythatsom
36、eoralloftheircontentconstitutesrequirementsofthisdocument.Fordatedreferences,onlytheeditioncitedapplies.Forundatedreferences,thelatesteditionofthereferenceddocument(includinganyamendments)applies.ISOIll45,OpticsandphotonicsLasersandlaser-relatedequipmentVocabularyandsymbolsSOlECGuide99,International
37、vocabularyofmetrologyBasicandgeneralconceptsandassociatedterms(VIM)3 TermsanddefinitionsForthepurposesofthisdocument,thetermsanddefinitionsgiveninISO11145,ISO/IECGuide99andthefollowingapply.ISOandIECmaintainterminologicaldatabasesforuseinstandardizationatthefollowingaddresses:ISOOnlinebrowsingplatfo
38、rm:availableathttps:WWW.iso.orgobp一IECElectropedia:availableathttps:WWW.electropedia.org/3.1relativeintensitynoiseRINRSquotientoftheradiantpowermeansquareHuctuationstothesquareofthemeanradiantpower,normalizedtoafrequencybandofunitwidthwhereistheequivalentnoisebandwidth.Note1toentry:Therelativeintens
39、itynoiseR(f)orRINseeFormulaisexplicitlyspokenofasthe“spectralrelativeintensitynoise,butusuallysimplyreferredtoasRIN.Note2toentry:Forfurtherdetails,seeAnneXA.ISO2025-Allrightsreserved3.2smallsignalcutofffrequencyfcfrequencyatwhichthelaserradiantpoweroutputmodulationdropstohalfthevalueobtainedatlowfre
40、quencieswhenapplyingSmaILconstantinputradiantpowermodulationandincreasingthefrequency4 SymbolsandunitsofmeasurementThesymbolsandunitsspecifiedinISO11145andinTable1areusedinthisdocument.Table1SymbolsandunitsofmeasurementSymbolUnitTermfHzFrequencyfcHzSmallsignalcut-offfrequencyWHzFrequencyrangeforwhic
41、htherelativeintensitynoiseRfisgivenk1Coveragefactorforthedeterminationofuncertaintym1Readingm1MeanvalueofreadingsPWRadiantpoweraveragedoverthesamplingperiodPWMeanradiantpower,averagedoverthemeasurementperiodattheoperatingconditionsspecifiedbythemanufacturerP1Relativeradiantpowerfluctuationtoa95%conf
42、idencelevelfortheappropriatesamplingperiodP(1s)and/or尸(1ms)and/or尸(0,1S)and/or尸(1s)QJMeanpulseradiantenergyAQ1Relativepulseradiantenergyfluctuationtoa95%confidencelevelRSHz-1ordB/HzRelativeintensitynoise,RINS1DetectorsignalS1MeasuredstandarddeviationTSPulserepetitionperiodtSMeasurementperiodUrel1Exp
43、andedrelativeuncertaintycorrespondingtoa95%confidencelevel(coveragefactork=2)UreI(C)1Expandedrelativeuncertaintyofcalibrationcorrespondingtoa95%confidencelevel(coveragefactor/c=2)TFSFalltimeoflaserpulseh1RelativepulsedurationfluctuationwithregardtoAOa95%confidencelevelTRSRisetimeoflaserpulse51Relati
44、vepulsedurationfluctuationwithregardto10toa95%confidencelevelNOTE1Forfurtherdetailsregarding95%confidencelevelseeISO2602LNOTE2Theexpandeduncertaintyisobtainedbymultiplyingthestandarduncertaintybyacoveragefactor/c=2.ItisdeterminedaccordingtoISO/IECGuide98-313.Ingeneral,withthiscoveragefactor,thevalue
45、ofthemeasurandlieswithaprobabilityofapproximately95%withintheintervaldefinedbytheexpandeduncertainty.NOTE3RSexpressedindB/Hzequals10IogIoR(7)withR(f)giveninHZ-L5 MeasurementprinciplesThelaserbeamisdirectedontothedetectorsurfacetoproduceasignalwithamplitudeproportionaltotheradiantpowerorradiantenergy
46、ofthelaser.Theamplitudeversustimeismeasured.Radiationemittedbysourceswithlargedivergenceanglesiscollectedbyanintegratingsphere.Beamformingandattenuationdevicesmaybeusedwhenappropriate.TheevaluationmethoddependsontheparametertobedeterminedandisdescribedinCIaUSe8.6 Measurementconfiguration,testequipme
47、ntandauxiliarydevices6.1 Preparation6.1.1 SourceswithsmalldivergenceanglesThelaserbeamandtheopticalaxisofthemeasuringsystemshallbecoaxial.Selectthediameter(crosssection)oftheopticalsystemsuchthatitaccommodatestheentirecrosssectionofthelaserbeamandsothatclippingordiffractionlossissmallerthan10%oftheintendedmeasurementuncertainty.Arrangeanopticalaxissothatitiscoaxialwiththelaserbeamtobemeasured.Suitableopticalalignmentdevicesareavailableforthispurpose(e.g.aligninglasersorsteeringmirrors).Mounttheattenuatorsorbeamformingopticssuchthattheopticalaxisrunsthroughthege
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