| 矩形波宽带通滤光膜研究 |
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| 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. |
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| 作者姓名： | 董莹 张艳茹 胡荣 刘永强 杨崇民 |
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| 作者单位： | 1.西安应用光学研究所 ，陕西 西安 710065 |
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| 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～1 100 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■≥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。
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| 关 键 词： | 光学薄膜 带通滤光膜 矩形波 吸光性 |
| 收稿时间： | 2022-02-08 |
Research on rectangular-wave broadband pass filter film |
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| Affiliation: | 1.Xi'an Institute of Applied Optics, Xi'an 710065, China2.Beijing RSLaser Opto-Electronics Technology Co.,Ltd., Beijing 102605, China |
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| 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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