董莹, 张艳茹, 胡荣, 刘永强, 杨崇民. 矩形波宽带通滤光膜研究[J]. 应用光学, 2023, 44(1): 188-194. DOI: 10.5768/JAO202344.0105002
引用本文: 董莹, 张艳茹, 胡荣, 刘永强, 杨崇民. 矩形波宽带通滤光膜研究[J]. 应用光学, 2023, 44(1): 188-194. DOI: 10.5768/JAO202344.0105002
DONG Ying, ZHANG Yanru, HU Rong, LIU Yongqiang, YANG Chongmin. Research on rectangular-wave broadband pass filter film[J]. Journal of Applied Optics, 2023, 44(1): 188-194. DOI: 10.5768/JAO202344.0105002
Citation: DONG Ying, ZHANG Yanru, HU Rong, LIU Yongqiang, YANG Chongmin. Research on rectangular-wave broadband pass filter film[J]. Journal of Applied Optics, 2023, 44(1): 188-194. DOI: 10.5768/JAO202344.0105002

矩形波宽带通滤光膜研究

Research on rectangular-wave broadband pass filter film

  • 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400 nm~1100 nm波段,中心波长λ0=515 nm,透射带λ=λ0±25 nm,透射带平均透射率\bar \tau ≥92%,截止带λ=400 nm~475 nm、λ=555 nm~1 100 nm,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。

     

    Abstract: A method for designing and preparing the rectangular-wave broadband pass filter was put forward after a deep study. A rectangular-wave OD3-A broadband pass filter was designed and prepared with this method, with its center wavelength λ0=515 nm in the working range of 400 nm~1 100 nm. And the mean transmittance of the sample in its pass-band of λ0±25 nm was great than or equal to 92.7%, meanwhile the transmittance in the cut-off band λ ranging from 400 nm~475 nm and λ ranging from 555 nm~1 100 nm was less than 0.1%. The transmittance of the thin film sample was tested, and the spectrum met the requirements. The rectangular-wave broadband pass filter designed and prepared by this method overcame the disadvantages of high precision requirements of Fabry-Perot interferometer narrow-band filter film monitoring, narrow pass-band broadband, high cost, overlarge total thickness, low pass-band transmittance and poor waveform rectangularity in the traditional combination way of long and short wave cut-off films.

     

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