文章编号：1002-2082(2023)01-0188-07矩形波宽带通滤光膜研究董莹1，张艳茹2，胡荣1，刘永强1，杨崇民1（1.西安应用光学研究所，陕西西安710065；2.北京科益虹源光电技术有限公司，北京102605）¯τ摘要：对矩形波宽带通滤光片进行了深入研究，提出了一种设计、制备矩形波宽带通滤光片的方法。使用该方法设计并制备了400nm~1100nm波段，中心波长λ0=515nm，透射带λ=λ0±25nm，透射带平均透射率≥92%，截止带λ=400nm~475nm、λ=555nm~1100nm，截止带透射率小于0.1%的矩形波宽带通OD3-A滤光片。对样片光谱进行了测试，结果满足需求。该方法设计、制备矩形波宽带通滤光片克服了F-P型窄带滤光膜监控精度要求高、通带宽带窄、成本高以及传统长、短波截止膜组合方式膜层总厚度过大、通带透过率低、波形矩形度差的缺点。关键词：光学薄膜；带通滤光膜；矩形波；吸光性中图分类号：TN305.8;O484.4文献标志码：ADOI：10.5768/JAO202344.0105002Researchonrectangular-wavebroadbandpassfilterfilmDONGYing1，ZHANGYanru2，HURong1，LIUYongqiang1，YANGChongmin1（1.Xi'anInstituteofAppliedOptics,Xi'an710065,China；2.BeijingRSLaserOpto-ElectronicsTechnologyCo.,Ltd.,Beijing102605,China）Abstract：Amethodfordesigningandpreparingtherectangular-wavebroadbandpassfilterwasputforwardafteradeepstudy.Arectangular-waveOD3-Abroadbandpassfilterwasdesignedandpreparedwiththismethod,withitscenterwavelengthλ0=515nmintheworkingrangeof400nm~1100nm.Andthemeantransmittanceofthesampleinitspass-bandofλ0±25nmwasgreatthanorequalto92.7%,meanwhilethetransmittanceinthecut-offbandλrangingfrom400nm~475nmandλrangingfrom555nm~1100nmwaslessthan0.1%.Thetransmittanceofthethinfilmsamplewastested,andthespectrummettherequirements.Therectangular-wavebroadbandpassfilterdesignedandpreparedbythismethodovercamethedisadvantagesofhighprecisionrequirementsofFabry-Perotinterferometernarrow-bandfilterfilmmonitoring,narrowpass-bandbroadband,highcost,overlargetotalthickness,lowpass-bandtransmittanceandpoorwaveformrectangularityinthetraditionalcombinationwayoflongandshortwavecut-offfilms.Keywords：opticalthinfilm；band-passfilterfilm；rectangularwave；opticaldensity引言带通滤光膜是指在一定波段内...
